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One hundred twenty (in American English; written and spoken as One hundred and twenty in British English and other english forms) (120, CXX) is the natural number following one hundred nineteen and preceding one hundred twenty-one. It is a triangular number as well as a composite number, with its divisors being 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30 and 60, making it a highly composite number, and its factorization is

This number is also the sum of a twin prime (59 + 61) as well as the sum of four consecutive primes (23 + 29 + 31 + 37). 120 is the smallest number to appear six times in Pascal's triangle. Five factorial is equal to 120.

See also: one hundred, one hundred ten, one hundred twenty, one hundred thirty

One hundred twenty is also:

• Very significant in the Holy Bible, being ten times the number of tribes of Israel. It is the age Moses died at (Deuteronomy 34:7), the cubits of the height of the Temple (2 Chronicles 3:4), the number of princes King Darius set over his kingdom (Daniel 6:2), the number of talents of gold Queen Sheba gave to King Solomon in tribute (1 Kings 10:10), and the weight in shekels of total gold spoons offered by each tribe of Israel (Numbers 7:86).
• A medium film format introduced by Kodak in 1901 and still in use in 2004.

One hundred twenty-one (121, CXXI) is the natural number following one hundred twenty and preceding one hundred twenty-two. It is a composite number, and its factorization is

This number is the sum of three consecutive primes (37 + 41 + 43).

One hundred twenty-one is also:

One hundred twenty-two (122, CXXII) is the natural number following one hundred twenty-one and preceding one hundred twenty-three. It is a composite number, and its factorization is

One hundred twenty-two is also:

• The number of men of Michmas at the Census (Holy Bible, Nehemiah 7:31).

One hundred twenty-three (123, CXXIII) is the natural number following one hundred twenty-two and preceding one hundred twenty-four. It is a Lucas number and a composite number, and its factorization is

One hundred twenty-three is also:

One hundred twenty-four (124, CXXIV) is the natural number following one hundred twenty-three and preceding one hundred twenty-five. It is a composite number, and its factorization is

One hundred twenty-four is also:

One hundred twenty-five (125, CXXV) is the natural number following one hundred twenty-four and preceding one hundred twenty-six. It is a composite number, and its factorization is

One hundred twenty-five is also:

One hundred twenty-six (126, CXXVI) is the natural number following one hundred twenty-five and preceding one hundred twenty-six. It is a composite number, with divsisors 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, making it an abundant number, and its factorization is

One hundred twenty-six is also:

One hundred twenty-seven (127, CXXVII) is the natural number following one hundred twenty-six and preceding one hundred twenty-eight. It is a Mersenne prime, 27 - 1, and as such, in binary it is a repunit prime, a permutable prime and a palindromic prime. This also means it is the largest integer that can be represented by a signed byte.

One hundred twenty-seven is also:

• ASCII and Unicode code point for delete.
• The number of provinces ruled by King Xerxes, "from India to Ethiopia" (Holy Bible, Esther 1:1).
• The number of sons of Bethlehem at the Census of men of Israel upon return from exile (Holy Bible, Ezra 2:21).

One hundred twenty-eight (128, CXXVIII) is the natural number following one hundred twenty-seven and preceding one hundred twenty-eight. It is a composite number, and its factorization is

One hundred twenty-eight is also:

• The size, in bits, of certain integer data types, used in computer representations of numbers.
• The number of sons of Anathoth at the Census of men of Israel upon return from exile (Holy Bible, Ezra 2:23). Also, the number of singers, sons of Asaph (Ezra 2:41).
• In megabytes, a common size for flash disks and memory cards.
• The number of musical instruments specified in General MIDI. Sometimes they are numbered 0 to 127 and sometimes they are numbered 1 to 128.

One hundred twenty-nine (129, CXXIX) is the natural number following one hundred twenty-eight and preceding one hundred thirty. It is a composite number, and its factorization is

This number is the sum of the first ten prime numbers.

One hundred twenty-nine is also: