Properties of the Number 12130

Twelve Thousand One Hundred Thirty

Basics

Value: 12129 → 12130 → 12131

Parity: even

Prime: No

Previous Prime: 12119

Next Prime: 12143

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 1213

Divisors: 1, 2, 5, 10, 1213, 2426, 6065, 12130

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111101100010

Octal: 27542

Duodecimal: 702A

Hexadecimal: 2f62

Square: 147136900

Square Root: 110.13627921806692

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 3·R_k - 2 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A55557

Number of integer partitions of n with at least one pair of consecutive divisible parts. A328221

G.f.: (1 - 4·x - sqrt(16·x² - 12·x + 1))/(2·x). A82301

Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of 2/(1 - 2·k*x + ((k-2)*x)² + (1 - k·x) * sqrt(1 - 2·k*x + ((k-2)*x)²)). A331791

a(n) = a(n-1) - 2·a(n-2) - 3·a(n-3) - ... - (n-1)*a(1), with a(1) = a(2) = 1, a(3) = -1. A106540

Number of n-step two-sided prudent self-avoiding walks ending at the northeast corner of their box. A191625

Numbers N such that N + the sum of the cubes of its digits is again a third power. A362953

Number of rooted trees on n nodes with forbidden limbs. A14267

Numbers k such that the continued fraction for sqrt(k) has period 33. A20372

Generalized Pascal's triangle made using Mod[(Prime[n] - 1)/2, 4] == 2 primorial-like Stirling polynomials. A119724