Properties of the Number 42225

Forty-Two Thousand Two Hundred Twenty-Five

Basics

Value: 42224 → 42225 → 42226

Parity: odd

Prime: No

Previous Prime: 42223

Next Prime: 42227

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 ² × 563

Divisors: 1, 3, 5, 15, 25, 75, 563, 1689, 2815, 8445

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010011110001

Octal: 122361

Duodecimal: 20529

Hexadecimal: a4f1

Square: 1782950625

Square Root: 205.48722588034516

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) = (5·n² + 1)*n² / 6. A8354

a(n) is the number of free polyominoids that have faces aligned to precisely 3 planes. A385400

McKay-Thompson series of class 20B for Monster. A58551

Number of binary strings of length n with no substrings equal to 0001 0011 or 1000. A164456

Number of zero-sum -n..n arrays of 5 elements with first through third differences also in -n..n. A202513

Denominators of continued fraction convergents to sqrt(638). A42225