Properties of the Number 12642

Twelve Thousand Six Hundred Forty-Two

Basics

Value: 12641 → 12642 → 12643

Parity: even

Prime: No

Previous Prime: 12641

Next Prime: 12647

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 7 ² × 43

Divisors: 1, 2, 3, 6, 7, 14, 21, 42, 43, 49

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11000101100010

Octal: 30542

Duodecimal: 7396

Hexadecimal: 3162

Square: 159820164

Square Root: 112.43664882946307

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

Numbers n such that Bernoulli number B_n has denominator 1806. A272139

Numbers k such that k divides 2^k+1 - 2. A14741

Numbers which converge to 2592 under repeated application of the powertrain map of A133500. A135384

The ζ triangle. A160474

a(n) = T(n,n), array T as in A050143. A50146

Numbers n such that 1ⁿ + 2ⁿ + 3ⁿ +...+ nⁿ == 7 (mod n). A226965

Square array A(n,k) read by antidiagonals: row n gives coordination sequence for lattice C_n. A103884

Triangle read by rows: number of nilpotent partial transformations (of an n-element set) of height r (height(α) = |Im(α)|), 0 <= r < n. A141618

7-Sondow numbers: numbers k such that p^s divides k/p + 7 for every prime power divisor p^s of k. A346555

Number of initial spin configurations in two-colored rooted trees with n nodes. A198760