ℕ atory
Play Now

Properties of the Number 42646

Forty-Two Thousand Six Hundred Forty-Six

Basics

Value: 42645 → 42646 → 42647

Parity: even

Prime: No

Previous Prime: 42643

Next Prime: 42649

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 21323

Divisors: 1, 2, 21323, 42646

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011010010110

Octal: 123226

Duodecimal: 2081A

Hexadecimal: a696

Square: 1818681316

Square Root: 206.50907970353265

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

Coordination sequence for (2,4,7) tiling of hyperbolic plane. A265062
Decimal concatenations of the 38 quintuples (d1,d2,d3,d4,d5) with elements in {2,4,6} for which there exists a prime p >= 7 such that the differences between the 6 consecutive primes starting with p are (d1,d2,d3,d4,d5). A78870
Principal diagonal of the convolution array A213756. A213757
a(n) = (13·3n-1)/2. A238055
Powers of fifth root of 23 rounded to nearest integer. A18181
Powers of fifth root of 23 rounded up. A18182
Number of walks within N2 (the first quadrant of Z2) starting at (0,0), ending on the vertical axis and consisting of n steps taken from {(-1, -1), (0, -1), (0, 1), (1, -1), (1, 0)}. A151442
Start from the singleton set S = {n}, and unless 1 is already a member of S, generate on each iteration a new set where each odd number k is replaced by 3k+1, and each even number k is replaced by 3k+1 and k/2. a(n) is the size of the set after the first iteration which has produced 1 as a member. A290100
Numerators of continued fraction convergents to sqrt(853). A42646
T7(n) in the notation of Bergeron et al., uk(n) in the notation of Gessel: Related to Young tableaux of bounded height. A72131