Properties of the Number 40145

Forty Thousand One Hundred Forty-Five

Basics

Value: 40144 → 40145 → 40146

Parity: odd

Prime: No

Previous Prime: 40129

Next Prime: 40151

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 5 × 7 × 31 × 37

Divisors: 1, 5, 7, 31, 35, 37, 155, 185, 217, 259

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110011010001

Octal: 116321

Duodecimal: 1B295

Hexadecimal: 9cd1

Square: 1611621025

Square Root: 200.36217207846394

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

Let r, s, t be three permutations of the set {1,2,3,..,n}; a(n) = value of ∑_i=1..n r(i)*s(i)*t(i), with r={1,2,3,..,n}; s={n,n-1,..,1} and t={n,n-2,n-4,...,1,...,n-3,n-1}. A70893

Expansion of (1-4·x+7·x²-5·x³+4·x⁴-6·x⁵+21·x⁶+18·x⁷-5·x⁸)/(1-x)⁵. A212393

Triangle t(n,m) = p(n)/ (p(m)*p(n-m) ) read by rows, where p(n>=1) = 1, -1, 2, 10, 10, -160, -2080,.. are partial products of A106852. A177694

Primes p such that x⁴ = 19 has a solution mod p. A40145