Properties of the Number 75140

Seventy-Five Thousand One Hundred Forty

Basics

Value: 75139 → 75140 → 75141

Parity: even

Prime: No

Previous Prime: 75133

Next Prime: 75149

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 5 × 13 × 17 ²

Divisors: 1, 2, 4, 5, 10, 13, 17, 20, 26, 34

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010010110000100

Octal: 222604

Duodecimal: 37598

Hexadecimal: 12584

Square: 5646019600

Square Root: 274.11676344215067

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

Ruth-Aaron numbers (1): sum of prime divisors of n = sum of prime divisors of n+1. A6145

For every positive integer m, let u(m) = (d(1),d(2),...,d(k)) be the unitary divisors of m. The sequence (a(n)) consists of successive numbers m which d(k)/d(1) + d(k-1)/d(2) + ... + d(k)/d(1) is an integer. A229996

Numbers whose square can be represented in exactly three ways as the sum of a positive square and a positive fourth power. A345968

Number of Dyck paths of semilength n and height exactly 7. A289420

a(n) = 65·n². A165798

Smaller term of each Ruth-Aaron pair in which the sum of distinct prime factors is a prime number. A372455

Denominator of the generalized harmonic number H(n,5,2). A75140

Number of (n+2)X(2+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 3 6 or 7. A251785