Properties of the Number 12172

Twelve Thousand One Hundred Seventy-Two

Basics

Value: 12171 → 12172 → 12173

Parity: even

Prime: No

Previous Prime: 12163

Next Prime: 12197

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 17 × 179

Divisors: 1, 2, 4, 17, 34, 68, 179, 358, 716, 3043

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10111110001100

Octal: 27614

Duodecimal: 7064

Hexadecimal: 2f8c

Square: 148157584

Square Root: 110.32678731840241

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

Multiples of 17 containing a 17 in their decimal representation. A121037

Number of triangle-free graphs on n vertices. A6785

a(n) = n³ + 5. A84381

Triangle read by rows: T(n,k) is the number of 2-compositions of n having k columns with an even sum (0<=k<=floor(n/2)). A181327

Triangle T(n,k), n>=0, 0<=k<=C(n,2), read by rows: T(n,k) = number of k-length saturated chains in the poset of Dyck paths of semilength n ordered by inclusion. A193536

Number of strict trees of weight 2n + 1 in which all outdegrees and all leaves are odd. A300797

Expansion of 1/(x^k*(1-x-3·x^k+1)) for k=6. A143457

Number of 2-compositions of n having no column with an even sum. A 2-composition of n is a nonnegative matrix with two rows, such that each column has at least one nonzero entry and whose entries sum up to n. A181329

Number of partitions of n containing at least one part m-7 if m is the largest part. A212547

Number of permutations of length n which avoid the patterns 1432, 2134, 2143. A116809