Properties of the Number 40242

Forty Thousand Two Hundred Forty-Two

Basics

Value: 40241 → 40242 → 40243

Parity: even

Prime: No

Previous Prime: 40241

Next Prime: 40253

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 19 × 353

Divisors: 1, 2, 3, 6, 19, 38, 57, 114, 353, 706

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001110100110010

Octal: 116462

Duodecimal: 1B356

Hexadecimal: 9d32

Square: 1619418564

Square Root: 200.60408769514146

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

T(n,k)=Number of nXk 0..2 arrays with no element equal to any value at offset (-1,-2) (0,-1) or (-1,0) and new values introduced in order 0..2. A274749

G.f.: ∑_n>=0 (xⁿ⁺¹ + i)ⁿ / (1 + i·xⁿ)ⁿ⁺¹, in which the constant term is taken to be 1. A323690

Number of permutations of [n] having no substring [k,k+1,k+2,k+3,k+4]. A370383

Number of n X 5 0..2 arrays with no element equal to any value at offset (-1,-2) (0,-1) or (-1,0) and new values introduced in order 0..2. A274746

Number of 5Xn 0..2 arrays with no element equal to any value at offset (-1,-2) (0,-1) or (-1,0) and new values introduced in order 0..2. A274752

Number of n X n 0..2 arrays with no element equal to any value at offset (-1,-2), (0,-1) or (-1,0) and new values introduced in order 0..2. A274744

Continued fraction for sqrt(259). A40242