Properties of the Number 42257

Forty-Two Thousand Two Hundred Fifty-Seven

Basics

Value: 42256 → 42257 → 42258

Parity: odd

Prime: Yes

Previous Prime: 42239

Next Prime: 42281

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 42257

Divisors: 1, 42257

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010100010001

Octal: 122421

Duodecimal: 20555

Hexadecimal: a511

Square: 1785654049

Square Root: 205.56507485465522

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

Fifth term of weak prime sextet: p(m-3)-p(m-4) < p(m-2)-p(m-3) < p(m-1)-p(m-2) < p(m)-p(m-1) < p(m+1)-p(m). A54832

Primes of the form 10·k² + 7. A195905

Numbers k such that the continued fraction for sqrt(k) has period 93. A20432

Denominators of continued fraction convergents to sqrt(654). A42257