Properties of the Number 42025

Forty-Two Thousand Twenty-Five

Basics

Value: 42024 → 42025 → 42026

Parity: odd

Prime: No

Previous Prime: 42023

Next Prime: 42043

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 5 ² × 41 ²

Divisors: 1, 5, 25, 41, 205, 1025, 1681, 8405, 42025

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 1010010000101001

Octal: 122051

Duodecimal: 203A1

Hexadecimal: a429

Square: 1766100625

Square Root: 205

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) = (6·n + 1)². A16922

Numbers n that are the hypotenuse of exactly 12 distinct integer-sided right triangles, i.e., n² can be written as a sum of two squares in 12 ways. A97226

Numbers k such that k | 4^k + 1. A15950

a(n) = (5·n)². A16850

a(n) = (11·n + 7)². A17474

Cyclops squares: squares (A000290) that are also cyclops numbers (A134808). A160711

a(n) = (12·n + 1)². A17534

Squares with initial digit '4'. A45787

Numbers k such that 6·k+1, 6·k+7, 6·k+13, 6·k+19 are consecutive primes. A90839

Squares which are the concatenation of two nonzero squares. A39686