Properties of the Number 78127

Seventy-Eight Thousand One Hundred Twenty-Seven

Basics

Value: 78126 → 78127 → 78128

Parity: odd

Prime: No

Previous Prime: 78121

Next Prime: 78137

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 7 × 11161

Divisors: 1, 7, 11161, 78127

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10011000100101111

Octal: 230457

Duodecimal: 39267

Hexadecimal: 1312f

Square: 6103828129

Square Root: 279.5120748733407

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

Numbers that are the sum of 3 positive 7th powers. A3370

Numbers k that divide 5^k + 2. A123062

a(n) = 5ⁿ + 2. A242328

Square array T(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where T(n,k) = ∑_j=1..n floor(n/(2·j-1))^k. A350122

Numbers k such that 5^k == -1 (mod k-1). A55688

a(n) = a(n-1) + a(n-2) - floor( a(n-1)/2 ). A173510

Minimal number (in decimal representation) with n nonprime substrings in base-5 representation (substrings with leading zeros are considered to be nonprime). A217105

Numbers k such that 4^k + 19 is prime. A253774

Numbers that are the sum of at most 3 positive 7th powers. A4865

Start with 1 and repeatedly reverse the digits and add 42 to get the next term. A118075