Properties of the Number 42247

Forty-Two Thousand Two Hundred Forty-Seven

Basics

Value: 42246 → 42247 → 42248

Parity: odd

Prime: No

Previous Prime: 42239

Next Prime: 42257

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 83 × 509

Divisors: 1, 83, 509, 42247

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010100000111

Octal: 122407

Duodecimal: 20547

Hexadecimal: a507

Square: 1784809009

Square Root: 205.54075021756634

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

Numbers n such that 4·10ⁿ + 3·R_n + 4 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A102989

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 441", based on the 5-celled von Neumann neighborhood. A272223

Denominators of continued fraction convergents to sqrt(649). A42247