Properties of the Number -129618

One Hundred Twenty-Nine Thousand Six Hundred Eighteen

Basics

Value: -129619 → -129618 → -129617

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 19 × 379

Divisors: 1, 2, 3, 6, 9, 18, 19, 38, 57, 114

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

Today's Target

8109 Try Today's Challenge

Representations

Binary: -11111101001010010

Octal: -375122

Duodecimal: -63016

Hexadecimal: -1fa52

Square: 16800825924

Square Root: 360.0249991320047

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

Heptagonal numbers (A000566) in which parity of digits alternates. A297646

Using the US English names for the nonnegative integers, assign each letter a numerical value as in A073327 (A=1, B=2, ..., Z=26), treat the name as a base-27 integer, and convert to decimal. A72959

a(n) = 324·n² + 18. A158590

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 40. A31718

Number of length-4 0..n arrays with no repeated value equal to the previous repeated value. A269468

a(n) is the number of 2-point antichains in the poset D_2n+1 of type D, whose elements are compositions of 2n+1. A344791

Duplicate of A072959. A87096

Integers k for which the sum of digits of Fibonacci(k) is a Fibonacci number. A383045