Properties of the Number 45240

Forty-Five Thousand Two Hundred Forty

Basics

Value: 45239 → 45240 → 45241

Parity: even

Prime: No

Previous Prime: 45233

Next Prime: 45247

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ³ × 3 × 5 × 13 × 29

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 13

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1011000010111000

Octal: 130270

Duodecimal: 22220

Hexadecimal: b0b8

Square: 2046657600

Square Root: 212.6969675383267

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

Triangle T(n,k) represents the coefficients of (x²⁰*d/dx)ⁿ, where n=1,2,3,...; generalization of Stirling numbers of second kind A008277, Lah-numbers A008297. A223522

Numbers k with the property that k is a substring of its base-6 representation. A38106

Numbers n such that the multiplicative group modulo n is the direct product of 6 cyclic groups. A272596

a(n) = (n+1)*(2·n+1)*(3·n+1). A11199

a(n) = φ(n⁵ - 1)/5 where φ is A000010. A319214

Period of the decimal expansion of 1/F as F runs through the Fibonacci numbers greater than 1 and not divisible by 2 or 5. A175550

Number of distinct products i·j*k·l*m for 1 <= i <= j <= k <= l <= m <= n. A284988

Triangular array read by rows: row n shows the coefficients of this polynomial of degree n: (1/n!)*(numerator of n-th derivative of 1/(1-3x+x²)). A328645

Numbers n such that 65·2ⁿ-1 is prime. A50558

Numbers that can be expressed as the difference of the squares of primes in exactly six distinct ways. A92002