Properties of the Number 71421

Seventy-One Thousand Four Hundred Twenty-One

Basics

Value: 71420 → 71421 → 71422

Parity: odd

Prime: No

Previous Prime: 71419

Next Prime: 71429

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 × 19 × 179

Divisors: 1, 3, 7, 19, 21, 57, 133, 179, 399, 537

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001011011111101

Octal: 213375

Duodecimal: 353B9

Hexadecimal: 116fd

Square: 5100959241

Square Root: 267.2470766912147

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

Number of partitions p of n such that median(p) < multiplicity(min(p)). A240212

a(n) is the number of 2 X 2 matrices with elements 1..n where at least one row and at least one column is strictly increasing. A390922

a(n) = ceiling(n*φ¹⁷), where φ is the golden ratio, A001622. A4972

Largest k such that k! < 2^2ⁿ. A152909

a(n) = a(n-1) + sum of decimal digits of nⁿ. A71421