ℕ atory
Play Now

Properties of the Number 42811

Forty-Two Thousand Eight Hundred Eleven

Basics

Value: 42810 → 42811 → 42812

Parity: odd

Prime: No

Previous Prime: 42797

Next Prime: 42821

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 31 × 1381

Divisors: 1, 31, 1381, 42811

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011100111011

Octal: 123473

Duodecimal: 20937

Hexadecimal: a73b

Square: 1832781721

Square Root: 206.9081922012756

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

Seaweeds(n): number of n-step self-avoiding walks on upper two quadrants grid starting at origin. A116903
a(n) = A007318 * [1, 6, 14, 9, 0, 0, 0, ...]. A143690
Strong pseudoprimes to base 51. A20277
Numbers incremented by their digit product produce a cube. A229185
Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 637", based on the 5-celled von Neumann neighborhood. A273306
Numbers k such that s(k) = s(k+1), where s(k) is the unitary analog of the alternating sum-of-divisors function (A307037). A333408
Number of walks within N3 (the first octant of Z3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 1), (0, -1, 1), (0, 0, -1), (1, 1, 0)}. A149357
Denominators of continued fraction convergents to sqrt(936). A42811
Table read by antidiagonals: T(h,n) is the number of n-step self avoiding walks on a 2D square grid confined to an infinite strip of height h where the walk starts at the origin. A336769
Table read by antidiagonals: T(b,n) is the number of n-step self avoiding walks on a 2D square grid confined inside an infinite well of width 2b where the walk starts at the middle of the well bottom. A336863