Properties of the Number 12406

Twelve Thousand Four Hundred Six

Basics

Value: 12405 → 12406 → 12407

Parity: even

Prime: No

Previous Prime: 12401

Next Prime: 12409

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 6203

Divisors: 1, 2, 6203, 12406

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11000001110110

Octal: 30166

Duodecimal: 721A

Hexadecimal: 3076

Square: 153908836

Square Root: 111.3822247937255

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

T(n,k)=Number of length n 1..(k+2) arrays with no leading partial sum equal to a prime and no consecutive values equal. A255716

a(n) = (prime(n)² + prime(n+1))/2. A140511

Indices of primes in A000219. A285216

Numerators of certain constants c_n = A180609(n)/n! related to Hurwitz numbers. A134242

Numbers k such that the continued fraction for sqrt(k) has period 86. A20425

Number of length n 1..(4+2) arrays with no leading partial sum equal to a prime and no consecutive values equal. A255712

Number of partitions of 2n that describe the degree sequence of exactly one labeled multigraph with no loops. A328863

a(n) = ∑_i=0..n T(i,n-i), array T as in A049723. A49724

Cyclops numbers whose squares are cyclops numbers. A239827

Least semiprime composed of a square and a positive cube in n different ways. A122956