Properties of the Number 12279

Twelve Thousand Two Hundred Seventy-Nine

Basics

Value: 12278 → 12279 → 12280

Parity: odd

Prime: No

Previous Prime: 12277

Next Prime: 12281

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 4093

Divisors: 1, 3, 4093, 12279

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111111110111

Octal: 27767

Duodecimal: 7133

Hexadecimal: 2ff7

Square: 150773841

Square Root: 110.81064930772673

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

Square array read by antidiagonals: T(m,n) = the number of tight m X n pavings (defined below). A285357

a(n+1) = A154771(a(n)) = sum of all distinct "valid substrings" of a(n); a(1)=10 (least nontrivial choice). A154770

Number of tight m X n pavings as defined in Knuth's A285357 written as triangle T(m,n), m >= 1, 1 <= n <= m. A298362

The number of tight 4 X n pavings. A336732

The number of tight 5 X n pavings. A336734

Number of free polybends with n cells. A392389

Sums of 12 distinct powers of 2. A38463

Numbers k such that w(k-2), w(k-1), and w(k) are all odd, where w is A336957. A338070

Least number m such that the arithmetic mean of the distinct prime divisors of m is equal to 2ⁿ. A70009

Semiprimes s = A001358(k) such that k, s - k and s + k are also semiprimes. A383468