130 (number) explained

Number:	130
Divisor:	1, 2, 5, 10, 13, 26, 65, 130

130 (one hundred [and] thirty) is the natural number following 129 and preceding 131.

In mathematics

130 is a sphenic number. It is a noncototient since there is no answer to the equation x - φ(x) = 130.

130 is the only integer that is the sum of the squares of its first four divisors, including 1: 1² + 2² + 5² + 10² = 130.

130 is the largest number that cannot be written as the sum of four hexagonal numbers.^[1]

130 equals both 2⁷ + 2 and 5³ + 5 and is therefore a doubly strictly number.^[2]

In religion

The Book of Genesis states Adam had Seth at the age of 130.The Second Book of Chronicles says that Jehoiada died at the age of 130.^[3]

In other fields

One hundred [and] thirty is also:

• The year AD 130 or 130 BC
• The 130 nanometer process is a semiconductor process technology by semiconductor companies
• A 130-30 fund or a ratio up to 150/50 is a type of collective investment vehicle
• The C-130 Hercules aircraft

References

1. http://mathworld.wolfram.com/HexagonalNumber.html MathWorld - Hexagonal Number
2. Mackenzie. Dana . 2184: An Absurd (and Adsurd) Tale. Integers. 18. March 2018.
3. Chronicles 24:15

See also

• List of highways numbered 130
• United Nations Security Council Resolution 130
• 130 Liberty Street, New York City