Properties of the Number 12421

Twelve Thousand Four Hundred Twenty-One

Basics

Value: 12420 → 12421 → 12422

Parity: odd

Prime: Yes

Previous Prime: 12413

Next Prime: 12433

Digit Sum: 10

Digital Root: 1

Palindrome: Yes

Factorization: 12421

Divisors: 1, 12421

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 11000010000101

Octal: 30205

Duodecimal: 7231

Hexadecimal: 3085

Square: 154281241

Square Root: 111.44954015158609

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

Palindromic primes: prime numbers whose decimal expansion is a palindrome. A2385

Centered 12-gonal numbers, or centered dodecagonal numbers: numbers of the form 6·k*(k-1) + 1. A3154

Numbers k such that (7^k - 3^k)/4 is prime. A128024

Triangle read by rows, related to number of permutations of [n] with 0 successions and k rises. A46739

Sum of positive Dyson's ranks of all partitions of n. A209616

Mountain primes. A134951

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 3 5 6 or 8 and every 3X3 column and antidiagonal sum not equal to 0 3 5 6 or 8. A252615

Primes such that the sum of the predecessor and successor primes is divisible by 41. A113157

Primes having only {1, 2, 4} as digits. A260267

Class 6+ primes. A81634