Properties of the Number 12090

Twelve Thousand Ninety

Basics

Value: 12089 → 12090 → 12091

Parity: even

Prime: No

Previous Prime: 12073

Next Prime: 12097

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 13 × 31

Divisors: 1, 2, 3, 5, 6, 10, 13, 15, 26, 30

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10111100111010

Octal: 27472

Duodecimal: 6BB6

Hexadecimal: 2f3a

Square: 146168100

Square Root: 109.95453605922768

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

Products of exactly 5 distinct primes. A46387

Number of parts > 1 in the last section of the set of partitions of n. A138135

a(n) = 2·n*(4·n - 1). A14635

a(n) = n⁴ - (n-1)⁴ + (n-2)⁴ - ... 0⁴. A62392

Number A(n,k) of acyclic orientations of the complete tripartite graph K_n,n,k; square array A(n,k), n>=0, k>=0, read by antidiagonals. A372254

a(1) = 0; for n > 1, a(n) is the square root of the smallest square > a(n-1)² with a(n-1)² forming its final digits. A65690

Triangular numbers that are sums of two consecutive primes. A111163

G.f.: A(x,y) = exp( ∑_n>=1 [∑_k=0..n C(n,k)³*y^k] * xⁿ/n ) = ∑_n>=0,k=0..n T(n,k)*xⁿ*y^k, as a triangle of coefficients T(n,k) read by rows. A181143

a(n) = 5·n*(5·n + 1)/2. A144312

The sum of the principal diagonals of an n X n spiral. A137930