Properties of the Number 42853

Forty-Two Thousand Eight Hundred Fifty-Three

Basics

Value: 42852 → 42853 → 42854

Parity: odd

Prime: Yes

Previous Prime: 42841

Next Prime: 42859

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 42853

Divisors: 1, 42853

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011101100101

Octal: 123545

Duodecimal: 20971

Hexadecimal: a765

Square: 1836379609

Square Root: 207.00966161027364

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

Primes of form k² + 4. A5473

Number of times that the numerator of a sum generated from the set 1, 1/2, 1/3,..., 1/n is a Fibonacci number. A256220

Larger terms of the pairs (a < b) in the sequence {a,b}-> {Max[{a,b}]-Min[{a,b}],k·Min[{a,b}]} with k=3 and the first pair {a=1,b=2}. See A075256. A75258

Primes of the form n² + 4n + 8. A98062

Irregular triangular array: row n gives numbers D, each being the discriminant of the minimal polynomial of a quadratic irrational represented by a continued fraction with period an n-tuple of 1s and 3s. A246921

Irregular triangular array: every periodic simple continued fraction CF represents a quadratic irrational (c + f·sqrt(d))/b, where b,c,f,d are integers and d is squarefree. Row n of this array shows the distinct values of d as CF ranges through the periodic continued fractions having period an n-tuple of 1s and 3s. A246922

Primes that remain prime through 3 iterations of function f(x) = 8x + 9. A23295

Numbers k such that k + sum_of_digits(k) is a cube. A84661

Primes p such that the largest prime factor of p⁵ + 1 is less than p. A102327

a(n) = ceiling(n*φ¹⁷), where φ is the golden ratio, A001622. A4972