Properties of the Number -127721

One Hundred Twenty-Seven Thousand Seven Hundred Twenty-One

Basics

Value: -127722 → -127721 → -127720

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: Yes

Factorization: 11 × 17 × 683

Divisors: 1, 11, 17, 187, 683, 7513, 11611, 127721

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11111001011101001

Octal: -371351

Duodecimal: -61AB5

Hexadecimal: -1f2e9

Square: 16312653841

Square Root: 357.38074934165104

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

Sum of the smallest parts of the partitions of 4n into 4 parts. A238702

Concatenation of n-th prime and its reverse. A67087

Palindromic numbers which can be written as the sum of two or more consecutive squares. A216446

a(n) = n⁴/8 + (5·n³)/12 - n²/8 - (5·n)/12 + 1. A226639

If p(x) is the x-th prime, then the n-th set of 5 consecutive sexy prime pairs starts at p(a(n)). A95964