Properties of the Number 42649

Forty-Two Thousand Six Hundred Forty-Nine

Basics

Value: 42648 → 42649 → 42650

Parity: odd

Prime: Yes

Previous Prime: 42643

Next Prime: 42667

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 42649

Divisors: 1, 42649

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011010011001

Octal: 123231

Duodecimal: 20821

Hexadecimal: a699

Square: 1818937201

Square Root: 206.51634317893584

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

Fundamental discriminants d uniquely characterizing all complex biquadratic fields Q(sqrt(-3),sqrt(d)) which have 3-class group of type (3,3) and second 3-class group isomorphic to SmallGroup(729,37). A250240

Prime numbers such that, in base 10, all their proper prefixes and suffixes represent composites. A254754

Main diagonal of A332357. A332358

Primes p such that the decimal expansion of its base 7 expansion converted to decimal is a square. A241246

Primes p such that p⁴-p³+1 and p⁴-p³-1 are also primes. A238136

Numbers k such that sum of digits of k = sum of digits of anti-divisors of k. A213239

a(n) = 3n³ + 2n² + n + 1. A130884

Primes having only {2, 4, 6, 9} as digits. A386156

Denominators of continued fraction convergents to sqrt(854). A42649

Number of n X 2 arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 n X 2 array. A219367