Properties of the Number 130

One Hundred Thirty

Basics

Value: 129 → 130 → 131

Parity: even

Prime: No

Previous Prime: 127

Next Prime: 131

Digit Sum: 4

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 × 13

Divisors: 1, 2, 5, 10, 13, 26, 65, 130

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000010

Octal: 202

Duodecimal: AA

Hexadecimal: 82

Square: 16900

Square Root: 11.40175425099138

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) = sigma₂(n): sum of squares of divisors of n. A1157

Unary-encoded compressed factorization of natural numbers. A156552

a(n) = prime(n) - 1. A6093

The squarefree numbers ordered lexicographically by their prime factorization (with factors written in decreasing order). a(n) = ∏_{k in I} prime(k+1), where I is the set of indices of nonzero binary digits in n = ∑_{k in I} 2^k. A19565

Numbers in base 5. A7091

Numbers in base 4. A7090

Numbers that are the product of exactly three (not necessarily distinct) primes. A14612

a(n) = 3·n + 1. A16777

Upper Wythoff sequence (a Beatty sequence): a(n) = floor(n*φ²), where φ = (1+sqrt(5))/2. A1950

Numbers k such that the k-th composition in standard order is an anti-run (no adjacent equal parts). A333489

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