Properties of the Number 12141

Twelve Thousand One Hundred Forty-One

Basics

Value: 12140 → 12141 → 12142

Parity: odd

Prime: No

Previous Prime: 12119

Next Prime: 12143

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 19 × 71

Divisors: 1, 3, 9, 19, 57, 71, 171, 213, 639, 1349

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111101101101

Octal: 27555

Duodecimal: 7039

Hexadecimal: 2f6d

Square: 147403881

Square Root: 110.18620603324175

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 k such that σ(k) = σ(k+13). A15883

T(n,n-4), where T is the array in A055830. A55831

a(n) = floor(n*(n+2)*(2·n-1)/8). A7518

Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of the symmetric matrix A115216; by antidiagonals. A202868

Number of distinct lines passing through at least two points in a triangular grid of side n. A244504

Molien series for 3-D group R4. A37243

Indices of primes in sequence defined by A(0) = 29, A(n) = 10·A(n-1) - 41 for n > 0. A101960

Numbers n such that P(13·n) is prime, where P(n) is the unrestricted partition number. A113518

Number of 2 X 2 matrices with all elements in {0,1,...,n} and determinant in {-1,0,1}. A209993

Expansion of ∑_k>=1 (-1 + ∏_j>=2 1 / (1 - x^k·j)). A329435