Properties of the Number 47139

Forty-Seven Thousand One Hundred Thirty-Nine

Basics

Value: 47138 → 47139 → 47140

Parity: odd

Prime: No

Previous Prime: 47137

Next Prime: 47143

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 19 × 827

Divisors: 1, 3, 19, 57, 827, 2481, 15713, 47139

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1011100000100011

Octal: 134043

Duodecimal: 23343

Hexadecimal: b823

Square: 2222085321

Square Root: 217.11517680715

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 nXk 0..1 arrays with no more than floor(nXk/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order. A223012

a(n) = [xⁿ] ∏_k=1..n 1/(1 - x^k)^n-k+1. A206228

a(n) = (1/n)*A205103(n). A205104

Number of nX4 0..1 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order. A223008

Number of 6Xn 0..1 arrays with no more than floor(6Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order. A223017

T(2n,n), array T as in A047130. A47139