Properties of the Number 71242

Seventy-One Thousand Two Hundred Forty-Two

Basics

Value: 71241 → 71242 → 71243

Parity: even

Prime: No

Previous Prime: 71237

Next Prime: 71249

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 179 × 199

Divisors: 1, 2, 179, 199, 358, 398, 35621, 71242

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001011001001010

Octal: 213112

Duodecimal: 3528A

Hexadecimal: 1164a

Square: 5075422564

Square Root: 266.9119705071318

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

Partial sums of A299291. A299292

T(n,k)=Number of (n+3)X(k+3) 0..3 white square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero. A230949

a(-3) = a(-2) = a(-1) = 0, a(0) = 1, a(n) = a(n-1) + 2·a(n-2) + 2·a(n-3) + a(n-4), for n>0. A123392

T(n,k)=Number of (n+3)X(k+3) 0..3 black square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero. A231023

Number of Level 2 hexagonal polyominoes with cheesy blocks and n cells. A167012

Irregular triangle read by rows: T(n,k) is the number of flattened Catalan words of length n with exactly k symmetric peaks, with k >= 0. A372883

Number of (n+3) X (1+3) 0..3 white square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero. A230942

Expansion of (1 + x + x³)/(1 - x² - 2·x⁴ - 2·x⁶ + x⁸). A363958

Arithmetic mean of n and R(n) where n is a number such that the least significant digit and the most significant digits are of same parity and R(n) is its digit reversal (A004086). A71242