Properties of the Number -127750

One Hundred Twenty-Seven Thousand Seven Hundred Fifty

Basics

Value: -127751 → -127750 → -127749

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 ³ × 7 × 73

Divisors: 1, 2, 5, 7, 10, 14, 25, 35, 50, 70

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4938 Try Today's Challenge

Representations

Binary: -11111001100000110

Octal: -371406

Duodecimal: -61B1A

Hexadecimal: -1f306

Square: 16320062500

Square Root: 357.42132001323034

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

Pentagonal numbers (A000326) whose digit reversal is a brilliant number (A078972). A115680

Pentagonal numbers for which both the sum of the digits and the product of the digits are pentagonal numbers. A117711

G.f. A(x) satisfies A(A(x)) = ∑_k>=1 k² * 2^k-1 * x^k. A372493

Pentagonal numbers for which the sum of the digits is also a pentagonal number. A117709