Properties of the Number 42630

Forty-Two Thousand Six Hundred Thirty

Basics

Value: 42629 → 42630 → 42631

Parity: even

Prime: No

Previous Prime: 42611

Next Prime: 42641

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 5 × 7 ² × 29

Divisors: 1, 2, 3, 5, 6, 7, 10, 14, 15, 21

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011010000110

Octal: 123206

Duodecimal: 20806

Hexadecimal: a686

Square: 1817316900

Square Root: 206.47033685253678

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

Triangle read by rows: T(n,c) = number of successive equalities in set partitions of n. A56857

Numbers k such that N = k⁶ is a twin rank (cf. A002822: 6N +- 1 are twin primes). A326236

Number of 2n-bead balanced binary strings of fundamental period 2n, rotationally equivalent to reverse, complement and reversed complement. A45665

a(n) = ∑_k=1..n k·sigma₂(k). A356125

Number of partitions of {1...n} containing 4 pairs of consecutive integers, where each pair is counted within a block and a string of more than 2 consecutive integers are counted two at a time. A105481

a(n) = n! * Laguerre(n, 3·n). A332693

Triangular array read by rows: T(n,k) is the number of blocks of size k in all set partitions of {1,2,...,n}. A175757

Unitary practical numbers that are nonsquarefree. A287173

a(n) = (n/2)*(n + 1)*(3·n + 11). A59997

a(n) = A130179(n)/81. A130085