Properties of the Number 12159

Twelve Thousand One Hundred Fifty-Nine

Basics

Value: 12158 → 12159 → 12160

Parity: odd

Prime: No

Previous Prime: 12157

Next Prime: 12161

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 × 193

Divisors: 1, 3, 7, 9, 21, 63, 193, 579, 1351, 1737

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111101111111

Octal: 27577

Duodecimal: 7053

Hexadecimal: 2f7f

Square: 147841281

Square Root: 110.26785569693463

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

Number of balls in pyramid with base either a regular hexagon or a hexagon with alternate sides differing by 1 (balls in hexagonal pyramid of height n taken from hexagonal close-packing). A19298

Minimal natural number (in decimal representation) with n prime substrings in binary representation (substrings with leading zeros are considered to be nonprime). A217302

Number of primes less than 10000n. A38813

MacMahon's generalized sum of divisors function. A2128

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..3 introduced in row major order. A239155

Number of primitive (period n) periodic palindromes using a maximum of two different symbols. A56493

Expansion of 1 / ∏_n>=0 (1-q⁵ⁿ⁺¹)(1-q⁵ⁿ⁺²)(1-q⁵ⁿ⁺³). A107234

Number of 10's in the last section of the set of partitions of n. A206560

Product of n-th prime number and n-th composite number. A67563

Expansion of (1-x)/(1 + 6·x - 3·x²). A99842