Properties of the Number 42437

Forty-Two Thousand Four Hundred Thirty-Seven

Basics

Value: 42436 → 42437 → 42438

Parity: odd

Prime: Yes

Previous Prime: 42433

Next Prime: 42443

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 42437

Divisors: 1, 42437

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Representations

Binary: 1010010111000101

Octal: 122705

Duodecimal: 20685

Hexadecimal: a5c5

Square: 1800898969

Square Root: 206.0024271701671

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

Primes of the form k² + 1. A2496

Primes p such that continued fraction of (1 + sqrt(p))/2 has period 3. A146348

Primes from merging of 5 successive digits in decimal expansion of e. A104846

Primes of the form 4·k² + 1. A121326

Primes of form 4·p² + 1, p prime. A52292

Divisorial primes: primes p of the form p = 1 + ∏_d∣k d for some k. A258455

Primes p such that π(p) is obtained by dropping one of the digits of p in decimal expansion. A114924

Divisorial primes: Primes p such that p = 1 + ∏_d∣n d for some n (ordered by n). A118370

Divisorial primes p of the form p = 1 + k² where k² = ∏_d∣k d= A007955(k) for some k. A258896

Generating function: 1/((1-x)*(1-x²)²*(1-x³)³*(1-x⁴)⁴). A64349