Properties of the Number 61140

Sixty-One Thousand One Hundred Forty

Basics

Value: 61139 → 61140 → 61141

Parity: even

Prime: No

Previous Prime: 61129

Next Prime: 61141

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 5 × 1019

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1110111011010100

Octal: 167324

Duodecimal: 2B470

Hexadecimal: eed4

Square: 3738099600

Square Root: 247.2650399874596

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

a(n) = 1 + ∑_{k=0..floor((n-1)/2)} a(k) * a(n-2·k-1). A351972

Number of length 2+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero. A250321

Number of nX4 0..1 arrays with diagonals and rows unimodal and antidiagonals nondecreasing. A224154

T(n,k)=Number of nXk 0..1 arrays with diagonals and rows unimodal and antidiagonals nondecreasing. A224158

Number of degree-n odd permutations of order exactly 8. A61140

Number of 7Xn 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,0) or (-1,1) and new values introduced in order 0..2. A275406