Properties of the Number 12621

Twelve Thousand Six Hundred Twenty-One

Basics

Value: 12620 → 12621 → 12622

Parity: odd

Prime: No

Previous Prime: 12619

Next Prime: 12637

Digit Sum: 12

Digital Root: 3

Palindrome: Yes

Factorization: 3 × 7 × 601

Divisors: 1, 3, 7, 21, 601, 1803, 4207, 12621

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000101001101

Octal: 30515

Duodecimal: 7379

Hexadecimal: 314d

Square: 159289641

Square Root: 112.34322409473569

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 in bases 10 and 20. A250408

Palindromic in bases 10 and 24. A250409

Palindromic and divisible by 7. A45642

Positive palindromes that are not the sum of two positive palindromes. A213879

Number of compositions (ordered partitions) of n into powers of 4. A87221

Pseudoprimes to base 13. A20141

a(n) = sigma₃(n³)/σ(n³). A77454

Octal palindromes which are also primes. A6341

Palindromic lucky numbers. A31161

a(1) = 2; then smallest palindrome > 1 not occurring earlier such that every partial concatenation is a prime. A88086