Properties of the Number 42155

Forty-Two Thousand One Hundred Fifty-Five

Basics

Value: 42154 → 42155 → 42156

Parity: odd

Prime: No

Previous Prime: 42139

Next Prime: 42157

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 × 8431

Divisors: 1, 5, 8431, 42155

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1010010010101011

Octal: 122253

Duodecimal: 2048B

Hexadecimal: a4ab

Square: 1777044025

Square Root: 205.31682834098135

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

The number of odd numbers that require n Collatz (3x+1) iterations to reach 1. A176866

G.f. A(x) satisfies A(A(A(x))) = x+3·x²+9·x³. A220288

Denominators of continued fraction convergents to sqrt(602). A42155