Properties of the Number 12542

Twelve Thousand Five Hundred Forty-Two

Basics

Value: 12541 → 12542 → 12543

Parity: even

Prime: No

Previous Prime: 12541

Next Prime: 12547

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 6271

Divisors: 1, 2, 6271, 12542

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11000011111110

Octal: 30376

Duodecimal: 7312

Hexadecimal: 30fe

Square: 157301764

Square Root: 111.99107107265293

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

a(n)-th and (a(n)+1)-st primes are the first pair of primes that differ by exactly 2n; a(n) = -1 if no such pair of primes exists. A38664

EULER transform of A001511. A92119

Let v = list of denominators of Farey series of order n (see A006843); a(n) = sum of products of adjacent terms of v. A278046

Möbius transform of A341512, σ(n)*A003961(n) - n*σ(A003961(n)). A346239

a(n) = 3·Fibonacci(n) + (-1)ⁿ. A97133

T(n,k)=Number of nXk arrays of occupancy after each element moves to some king-move neighbor. A221192

Indices k such that A377091(k) is immediately followed by A377091(k+1) = -A377091(k). A379802

Triangle T, read by rows, where T(n,k) = [T²](n-1,k) + [T²](n-2,k-1) (n>k>0), with T(n,0) = [T²](n-1,0) (n>0) and T(n,n) = 1 (n>=0), where T² is the matrix square of T. A109316

Column 0 of triangle T=A109316 where T(n,k) = [T²](n-1,k) + [T²](n-2,k-1) and T² is the matrix square of T. A109317

Number of tilings of a 5 X n rectangle using n pentominoes of shapes T, N, X. A361250