Properties of the Number 40066

Forty Thousand Sixty-Six

Basics

Value: 40065 → 40066 → 40067

Parity: even

Prime: No

Previous Prime: 40063

Next Prime: 40087

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 13 × 23 × 67

Divisors: 1, 2, 13, 23, 26, 46, 67, 134, 299, 598

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001110010000010

Octal: 116202

Duodecimal: 1B22A

Hexadecimal: 9c82

Square: 1605284356

Square Root: 200.1649319935937

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

Expansion of 1/sqrt(1 - 4·x/(1-x)⁵). A359758

a(n) = σ[k](n) - φ(n)^k - d(n)^k for k=3. A79539

Numbers k such that k² is composed of three 1-digit-overlapping subsquares. A48426

Number of (n+1) X 2 0..2 arrays with every 2 X 2 subblock having nonzero determinant and commuting with every horizontal or vertical neighbor. A207142

Number of permutations of {1..n} with fewer than 5 interior elements having values lying between the values of their neighbors. A226438

T(n,k) = number of permutations of {1..n} with fewer than k interior elements having values lying between the values of their neighbors. A226441

Primes p such that x³ = 13 has no solution mod p. A40066