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Properties of the Number 5642

Five Thousand Six Hundred Forty-Two

Basics

Value: 5641 → 5642 → 5643

Parity: even

Prime: No

Previous Prime: 5641

Next Prime: 5647

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 7 × 13 × 31

Divisors: 1, 2, 7, 13, 14, 26, 31, 62, 91, 182

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 1011000001010

Octal: 13012

Duodecimal: 3322

Hexadecimal: 160a

Square: 31832164

Square Root: 75.11324783285569

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

Number of sublattices of index n in generic 3-dimensional lattice. A1001
G.f.: ∏k>=1 1/(1+xk)k. A255528
Number of strict integer partitions of n with at least one neighborless part. A356607
Squarefree integers m > 1 such that if prime p divides m, then the sum of the base p digits of m is at least p. A324315
Numbers having exactly three prime gaps in their factorization. A73495
Numbers k such that σ(x) = k has exactly 7 solutions. A60663
Twice octagonal numbers: 2·n*(3·n-2). A139267
Squarefree integers m > 1 such that if prime p divides m, then sp(m) >= p and sp(m) == 2 (mod p-1), where sp(m) is the sum of the base p digits of m. A324404
Sum of all the parts in the partitions of n into 10 squarefree parts. A326627
Numbers which are the sum of two positive cubes and divisible by 13. A94447