Properties of the Number -142187

One Hundred Forty-Two Thousand One Hundred Eighty-Seven

Basics

Value: -142188 → -142187 → -142186

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 29 × 4903

Divisors: 1, 29, 4903, 142187

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100010101101101011

Octal: -425553

Duodecimal: -6A34B

Hexadecimal: -22b6b

Square: 20217142969

Square Root: 377.0769152308319

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

Number of Carlitz compositions of n that either have length 1, or have length greater than or equal to 2 and are palindromic if we exclude the first part. A291941

Least k such that ∑_i=1..k 1/φ(i) >= n. A74467

a(n) = 169·n² + 2·n. A158220