Properties of the Number -2139

One Hundred Thirty-Nine

Basics

Value: -2140 → -2139 → -2138

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 23 × 31

Divisors: 1, 3, 23, 31, 69, 93, 713, 2139

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100001011011

Octal: -4133

Duodecimal: -12A3

Hexadecimal: -85b

Square: 4575321

Square Root: 46.24932431938871

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

Sequence of coefficients arising in study of generating function for A067619. A186545

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 361", based on the 5-celled von Neumann neighborhood. A271417

arcsin(arctan(tanh(x)))=x-3/3!*x³+49/5!*x⁵-2139/7!*x⁷+181921/9!*x⁹... A12223

a(n) = n*(4·n+1). A7742

Expansion of g.f. x*(1 + 3·x)/((1 + x)*(1 - x)³). A35608

Numbers k such that 2^k + 3 is prime. A57732

Expansion of 1 / ∏_k>=1 (1-x^k)^k+1. A5380

Number of integer partitions of n with more than one mode. A362607

Even triangular numbers halved. A74378

Squarefree numbers with a divisor having the same sum of prime indices as their quotient. A357854