129 (number)

One Hundred and Twenty-Nine is the natural number following 128 and preceding 130.

Mathematics:

• 129 is a composite number.
• Its prime factorization is 3 x 43.
• It has four divisors: 1, 3, 43, and 129.
• 129 is an odd number.
• It is a deficient number, as the sum of its proper divisors (1 + 3 + 43 = 47) is less than itself.

Other Contexts:

• In some cultures, numbers may hold symbolic or cultural significance, although 129 does not have widespread, commonly known significance.
• 129 can appear as a designation or identifier, such as a product number, street address, or page number. However, this usage is purely contextual and does not confer any inherent mathematical or cultural meaning.