Properties of the Number 12129

Twelve Thousand One Hundred Twenty-Nine

Basics

Value: 12128 → 12129 → 12130

Parity: odd

Prime: No

Previous Prime: 12119

Next Prime: 12143

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 13 × 311

Divisors: 1, 3, 13, 39, 311, 933, 4043, 12129

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10111101100001

Octal: 27541

Duodecimal: 7029

Hexadecimal: 2f61

Square: 147112641

Square Root: 110.13173929435601

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

Growth series for affine Coxeter group B₄. A267167

a(n) = n*(8·n-1). A139274

Numbers k such that 30·R_k + 1 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A55520

Those n for which A140259(n) = A002264(n+11). A140260

Numbers n which are concatenations n=x//y such that x²+y³ is a multiple of n. A162464

s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (F(2), F(3), ...), t = A001950 (upper Wythoff sequence). A24594

a(n) = 5·a(n-1) - 8·a(n-2), with a(0)=0, a(1)=1. A190969

Numbers n for which 10ⁿ mod n = 2^k for some positive integer k. A293907

Table read by antidiagonals: T(n,k) (n >= 2, k >= 1) is the number of regions formed in a regular 2n-gon by straight line segments when connecting the k+1 points that divide each side into k equal parts to the equivalent point on the side diagonally opposite. A356799

Terms of A329150 that have several preimages. A361750