Properties of the Number 42208

Forty-Two Thousand Two Hundred Eight

Basics

Value: 42207 → 42208 → 42209

Parity: even

Prime: No

Previous Prime: 42197

Next Prime: 42209

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ⁵ × 1319

Divisors: 1, 2, 4, 8, 16, 32, 1319, 2638, 5276, 10552

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010011100000

Octal: 122340

Duodecimal: 20514

Hexadecimal: a4e0

Square: 1781515264

Square Root: 205.44585661434013

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

Generalized Fibonacci numbers D_n,3. A6211

Expansion of e.g.f. A(x) satisfying A(x) = ∑_n>=0 (3·A(x)ⁿ + 1)ⁿ * xⁿ/n!. A361057

Expansion of (∏_j>=1 (1-(-x)^j) - 1)¹⁶ in powers of x. A47641

Number of (s(0), s(1), ..., s(n)) such that 0 < s(i) < 6 and |s(i) - s(i-1)| <= 1 for i = 1,2,...,n, s(0) = 2, s(n) = 4. A94306

Expansion of e.g.f. (1 - x·log(1 - x))². A377682

a(n) = F(n) + L(n) + n, where F(n) (A000045) and L(n) (A000204) are Fibonacci and Lucas numbers respectively. A13915

Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 or 00000011. A259720

T(n,k) = Number of (n+2) X (k+2) 0..1 arrays with each 3 X 3 subblock having clockwise perimeter pattern 00000001 or 00000011. A259723

Numerators of continued fraction convergents to sqrt(630). A42208