Properties of the Number 42380

Forty-Two Thousand Three Hundred Eighty

Basics

Value: 42379 → 42380 → 42381

Parity: even

Prime: No

Previous Prime: 42379

Next Prime: 42391

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 5 × 13 × 163

Divisors: 1, 2, 4, 5, 10, 13, 20, 26, 52, 65

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010110001100

Octal: 122614

Duodecimal: 20638

Hexadecimal: a58c

Square: 1796064400

Square Root: 205.8640327983497

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

Permanent of the (0,1)-matrix with ij-th entry equal to zero iff (i=1,j=1),(i=1,j=2),(i=1,j=3),(i=2,j=3),(i=3,j=3),... In other words, the ij-th entry of the matrix is zero iff it is on the path which start from the entry (i=1,j=1) and moves in the matrix alternating 3 steps to the right to 3 steps down. A98926

Number of n X 2 0,1 arrays indicating 2 X 2 subblocks of some larger (n+1) X 3 binary array having determinant equal to one, with rows and columns of the latter in nondecreasing lexicographic order. A227637

G.f. A(x) satisfies: A(x) = ∏_k>=1 1/(1 + x^k*A(x)^k)^k. A301831

Numerators of continued fraction convergents to sqrt(717). A42380