Properties of the Number 43220

Forty-Three Thousand Two Hundred Twenty

Basics

Value: 43219 → 43220 → 43221

Parity: even

Prime: No

Previous Prime: 43207

Next Prime: 43223

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 5 × 2161

Divisors: 1, 2, 4, 5, 10, 20, 2161, 4322, 8644, 10805

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 1010100011010100

Octal: 124324

Duodecimal: 21018

Hexadecimal: a8d4

Square: 1867968400

Square Root: 207.8942038634074

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+1)X(k+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum unequal to its neighbors horizontally, vertically, diagonally and antidiagonally. A253314

Sides of integer Heronian triangles [prime(A068964(n)), prime(A068964(n)+1), a(n)] with area A068966(n). A68965

Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=2, r=3, I={-1}. A80011

Number of (n+1)X(2+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum unequal to its neighbors horizontally, vertically, diagonally and antidiagonally. A253308

Number of (n+1) X (4+1) 0..2 arrays with every 2 X 2 subblock diagonal maximum minus antidiagonal maximum unequal to its neighbors horizontally, vertically, diagonally and antidiagonally. A253310

Even side of integer-sided triangle such that the area is an integer and two sides are twin primes. A257547

a(n) = ceiling(10000·log₂(n)). A4270

Numbers k such that 0 and 5 occur juxtaposed in the base-10 representation of k but not of k-1. A43220