Properties of the Number 72423

Seventy-Two Thousand Four Hundred Twenty-Three

Basics

Value: 72422 → 72423 → 72424

Parity: odd

Prime: No

Previous Prime: 72421

Next Prime: 72431

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 13 × 619

Divisors: 1, 3, 9, 13, 39, 117, 619, 1857, 5571, 8047

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001101011100111

Octal: 215347

Duodecimal: 35AB3

Hexadecimal: 11ae7

Square: 5245090929

Square Root: 269.11521696106297

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

Meandric numbers for a river crossing up to 5 parallel roads at n points. A208126

T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing. A203896

Number of (n+1)X3 0..4 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing. A203890

Number of (n+1)X(n+1) 0..4 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing. A203888

G.f. satisfies: a(2·n) equals coefficient of xⁿ in A(x)ⁿ⁺¹ and a(2·n+1) equals coefficient of xⁿ⁺¹ in A(x)ⁿ⁺¹, for n>=0, with a(0)=1. A94600

The t-est sequence is similar to the Aronson sequence except that instead of being in English it is in Latin. A72423