Properties of the Number -42090

Forty-Two Thousand Ninety

Basics

Value: -42091 → -42090 → -42089

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 5 × 23 × 61

Divisors: 1, 2, 3, 5, 6, 10, 15, 23, 30, 46

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4938 Try Today's Challenge

Representations

Binary: -1010010001101010

Octal: -122152

Duodecimal: -20436

Hexadecimal: -a46a

Square: 1771568100

Square Root: 205.1584753306575

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

T(n,k)=Number of nXk 0..2 arrays with rows, columns, diagonals and antidiagonals unimodal. A223742

Number of polygons formed outside a regular n-gon when every pair of vertices of the n-gon are joined by an infinite line. A344311

Denominators of the convergents given by treating A391217 as continued fraction coefficients after the leading 0. A392259

Bosonic string states. A5308

Number of nX3 0..2 arrays with rows, columns, diagonals and antidiagonals unimodal. A223737

Number of n X 4 0..2 arrays with rows, columns, diagonals and antidiagonals unimodal. A223738

Irregular triangle read by rows: row n lists the rank sizes of the "electrical" poset EP_n of circular planar graphs with n boundary vertices. A232967

Number of strings of numbers x(i=1..n) in 0..5 with sum i³*x(i)² equal to n³*25. A184299