Properties of the Number -135981

One Hundred Thirty-Five Thousand Nine Hundred Eighty-One

Basics

Value: -135982 → -135981 → -135980

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 29 × 521

Divisors: 1, 3, 9, 29, 87, 261, 521, 1563, 4689, 15109

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

9108 Try Today's Challenge

Representations

Binary: -100001001100101101

Octal: -411455

Duodecimal: -66839

Hexadecimal: -2132d

Square: 18490832361

Square Root: 368.7560169000636

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

Irregular table read by rows: n-th row lists the 9 n-gonal numbers of a 3 X 3 semimagic square with the smallest magic sum. The terms of each row are arranged in the manner shown in A261816. A265141

The first of two consecutive triangular numbers the sum of which is equal to the sum of two consecutive prime numbers. A298462

Triangular numbers (A000217) with indices A000043. A139117

Smallest number m in a set of at least three consecutive triangular numbers with three distinct prime factors. A349539

Triangular numbers that are the sum of two distinct nonzero triangular numbers in exactly two ways. A350368