Properties of the Number 72426

Seventy-Two Thousand Four Hundred Twenty-Six

Basics

Value: 72425 → 72426 → 72427

Parity: even

Prime: No

Previous Prime: 72421

Next Prime: 72431

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 12071

Divisors: 1, 2, 3, 6, 12071, 24142, 36213, 72426

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10001101011101010

Octal: 215352

Duodecimal: 35AB6

Hexadecimal: 11aea

Square: 5245525476

Square Root: 269.1207907241653

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

Numbers n such that the decimal expansions of both n and n² have 2 as smallest digit and 7 as largest digit. A257123

Numbers k such that k and k² use only the digits 2, 4, 5, 6 and 7. A137094

Triangle read by rows, T(n, k) = S(k, n) with S(n, n) = 1, S(0, n) = 0 and otherwise S(k,n) = ∑_i=1..n-k+1 kⁱ*S(k-1, n-i), for n>=0 and 0<=k<=n. A269955

Numbers whose Hebrew name begin with the letter "Shin". A72426

Number of nX3 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or three plus the sum of the elements diagonally to its northwest, modulo 4. A240343

Number of 3Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or three plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4. A240462