Properties of the Number 42139

Forty-Two Thousand One Hundred Thirty-Nine

Basics

Value: 42138 → 42139 → 42140

Parity: odd

Prime: Yes

Previous Prime: 42131

Next Prime: 42157

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 42139

Divisors: 1, 42139

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010010010011011

Octal: 122233

Duodecimal: 20477

Hexadecimal: a49b

Square: 1775695321

Square Root: 205.2778604720928

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 whose digits are in nondecreasing order in bases 7 and 8. A329297

Prime numbers p for which the quintic polynomial x⁵ - x - 1 modulo p completely factors into linear polynomials. A135844

Prime numbers p not of the form 10·k+1 for which the quintic polynomial x⁵-x-1 modulus p is factorizable into five binomials. A135845

Primes of the form 2·n² + 42·n + 19. A221903

Primes p such that if q and r are the next two primes, 6·q-r, 6·q-p, 6·q+p and 6·q+r are all prime. A351636

Primes in A152535. A152563

Depression-type primes with five digits; from left to right digits decrease to and increase from the central digit. A157083

Smallest prime that is the (sum, k·prime(k),k=m,..n+m-1) for some m, or 0 if no such m exists. A268467

Primes q such that 15·q-4, 15·q-2, 15·q+2 and 15·q+4 are all primes. A342717

Denominators of continued fraction convergents to sqrt(594). A42139