Properties of the Number 12745

Twelve Thousand Seven Hundred Forty-Five

Basics

Value: 12744 → 12745 → 12746

Parity: odd

Prime: No

Previous Prime: 12743

Next Prime: 12757

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 × 2549

Divisors: 1, 5, 2549, 12745

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000111001001

Octal: 30711

Duodecimal: 7461

Hexadecimal: 31c9

Square: 162435025

Square Root: 112.89375536317321

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 vertices formed when n equally spaced points are placed around a circle and all pairs of points are joined by an interior arc whose radius equals the circle's radius. A371254

Main diagonal of A332357. A332358

a(n) = 10·n² - 6·n + 1. A87348

Sizes of successive balls in D₄ lattice. A46949

Nonnegative integers k such that the Euclidean distance between the vector of proportions of the digits 0-9 in 2^k and the uniform distribution (1/10, ..., 1/10) sets a new minimum. A393331

Numerators of continued fraction convergents to sqrt(771). A42486

Concatenation of n-th prime and n-th nonprime. A253910

Record values of A018799 (Smallest nonnegative integer m such that m! begins with n in base 10). A279089

Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of ∏_j>=1 1/(1 - j·x^j)^{j^k}. A294589

Number of n X 2 0..3 arrays with rows and columns lexicographically nondecreasing read forwards and nonincreasing read backwards. A201975