Properties of the Number 40138

Forty Thousand One Hundred Thirty-Eight

Basics

Value: 40137 → 40138 → 40139

Parity: even

Prime: No

Previous Prime: 40129

Next Prime: 40151

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 7 × 47 × 61

Divisors: 1, 2, 7, 14, 47, 61, 94, 122, 329, 427

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110011001010

Octal: 116312

Duodecimal: 1B28A

Hexadecimal: 9cca

Square: 1611059044

Square Root: 200.3447029496912

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 that are the sum of seven fifth powers in two or more ways. A345605

Numbers that are the sum of seven fifth powers in exactly two ways. A346279

Least k such that k·Mersenne - prime(n) + 1 is prime. A98556

Nearest k to j such that k*(2^j-1)+1 is prime where j=A000043(n) and 2^j-1 = Mersenne-prime(n) = A000668(n). If there are two k values equidistant from j, each of which produces a prime, the larger of the two gets added to the sequence. A159585

a(n) = Lucas(4·n). A56854

Primes p such that x⁴ = 17 has a solution mod p. A40138