Properties of the Number 40045

Forty Thousand Forty-Five

Basics

Value: 40044 → 40045 → 40046

Parity: odd

Prime: No

Previous Prime: 40039

Next Prime: 40063

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 5 × 8009

Divisors: 1, 5, 8009, 40045

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110001101101

Octal: 116155

Duodecimal: 1B211

Hexadecimal: 9c6d

Square: 1603602025

Square Root: 200.11246837716035

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 u be any string of n digits from {0,...,4}; let f(u) = number of distinct primes, not beginning with 0, formed by permuting the digits of u to a base-5 number; then a(n) = max_u f(u). A65846

Partial sums of A206032 (∏_d∣n σ(d)). A280085

(Prime(prime(n))²+1)/2. A92773

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 1), (-1, 1, 1), (1, -1, 0), (1, 0, -1), (1, 1, 1)}. A149804

Primes p such that x³ = 5 has no solution mod p. A40045

Number of nX4 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 4,1,0,2,3 for x=0,1,2,3,4. A196946