Properties of the Number -12942

Twelve Thousand Nine Hundred Forty-Two

Basics

Value: -12943 → -12942 → -12941

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 719

Divisors: 1, 2, 3, 6, 9, 18, 719, 1438, 2157, 4314

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -11001010001110

Octal: -31216

Duodecimal: -75A6

Hexadecimal: -328e

Square: 167495364

Square Root: 113.76291135515125

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

Number of one-sided hexagonal polyominoes with n cells. A6535

Irregular table read by rows: T(n,k) is the number of permutations in S_n that have exactly k occurrences of the pattern 2413. 0 <= k <= A342854(n). A342860

a(n) is the number of distinct n-th powers of functions {1, 2, 3, 4, 5, 6} -> {1, 2, 3, 4, 5, 6}. A103950

G.f.: 1 + ∑_n>=1 a(n)*xⁿ/(1 - xⁿ) = ∏_n>=1 (1 + xⁿ)/(1 - xⁿ). A300274

Numbers n such that n² is a sum of 2 and also of 4 consecutive primes. A252066

a(n) = ∑_i=1..n σ(i)*σ(i+1), where σ(n) = A000203(n) is the sum of the divisors of n. A330322

a(n) = ∑_k=0..n 3^k * 2^n-k * binomial(3·n+1,k) * binomial(3·n-k,n-k). A386830

Denominators of continued fraction convergents to sqrt(165). A41305

Number of different 5th-power (quintic) mappings of a finite set of n elements into itself. A163861

Expansion of ∏_k>=1 (1 - ∑_j>=1 j·x^k·j). A329157