Properties of the Number 40240

Forty Thousand Two Hundred Forty

Basics

Value: 40239 → 40240 → 40241

Parity: even

Prime: No

Previous Prime: 40237

Next Prime: 40241

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 ⁴ × 5 × 503

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001110100110000

Octal: 116460

Duodecimal: 1B354

Hexadecimal: 9d30

Square: 1619257600

Square Root: 200.59910268991734

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

a(n) is the concatenation of n and 6n. A9440

List of coefficients of reduced chromatic polynomial of icosahedron, highest order terms first. A296916

First differences of A057809. A87238

Numbers k such that the number of primes between k and 2k (inclusive) is equal to the number of primes between k and reverse(k) (inclusive). A74814

Expansion of x*(x³+3·x²-1)*(5·x⁴-5·x²+1) / ( -1+x+8·x²-7·x³-21·x⁴+15·x⁵+20·x⁶-10·x⁷-5·x⁸+x⁹ ). A122604

Number of n-colorings of the icosahedral graph. A218514

Continued fraction for sqrt(257). A40240