Properties of the Number 40230

Forty Thousand Two Hundred Thirty

Basics

Value: 40229 → 40230 → 40231

Parity: even

Prime: No

Previous Prime: 40213

Next Prime: 40231

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ³ × 5 × 149

Divisors: 1, 2, 3, 5, 6, 9, 10, 15, 18, 27

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001110100100110

Octal: 116446

Duodecimal: 1B346

Hexadecimal: 9d26

Square: 1618452900

Square Root: 200.57417580536134

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

T(n,k) = Number of n X k binary arrays without the pattern 1 1 0 diagonally, vertically or horizontally. A188523

a(n) = 1·2*3·4*5·6*7·8 - 9·10·11·12·13·14·15·16 + 17·18·19·20·21·22·23·24 - ... + (up to n). A319549

First 5-digit number to appear n times in the decimal expansion of π. A277171

Column 5 of array in A265080. A265085

Number of nX4 binary arrays without the pattern 1 1 0 diagonally, vertically or horizontally. A188518

Number of nX5 binary arrays without the pattern 1 1 0 diagonally, vertically or horizontally. A188519

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 793", based on the 5-celled von Neumann neighborhood. A273566

E.g.f.: exp(6·x*G(x)⁵) / G(x) where G(x) = 1 + x·G(x)⁶ is the g.f. of A002295. A251666

Continued fraction for sqrt(246). A40230

Number of nX9 binary arrays with each 1 adjacent to exactly one 1 vertically and one 1 horizontally. A183341