130 (number)

← 129 131 → 130
← 130 131 132 133 134 135 136 137 138 139 → List of numbers — Integers ← 100 110 120 130 140 150 160 170 180 190 →
Cardinal	one hundred [and] thirty
Ordinal	130th (one hundred [and] thirtieth)
Factorization	$2 \cdot 5 \cdot 13$
Divisors	1, 2, 5, 10, 13, 26, 65, 130
Roman numeral	CXXX
Binary	100000102
Octal	2028
Duodecimal	AA12
Hexadecimal	8216

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.

In other fields

One hundred [and] thirty is also:

• The year AD130 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 C130 Hercules aircraft

See also

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