130 (number)

One Hundred and Thirty is the natural number following 129 and preceding 131.

Mathematics

• 130 is an even number.
• 130 is a composite number. Its proper divisors are 1, 2, 5, 10, 13, 26, and 65.
• 130 is the sum of the first 10 triangular numbers (1 + 3 + 6 + 10 + 15 + 21 + 28 + 36 + 45 = 130).
• 130 is a nontotient number.
• 130 can be expressed as the sum of two squares: 130 = 3² + 11².
• 130 is a sphenic number (a product of three distinct primes: 2 x 5 x 13).

Other Fields

• 130 is sometimes used as a code or designation for various things depending on the context (e.g., in model numbers, product codes). The specific meaning depends entirely on the field of application.