Properties of the Number 42080

Forty-Two Thousand Eighty

Basics

Value: 42079 → 42080 → 42081

Parity: even

Prime: No

Previous Prime: 42073

Next Prime: 42083

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ⁵ × 5 × 263

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010001100000

Octal: 122140

Duodecimal: 20428

Hexadecimal: a460

Square: 1770726400

Square Root: 205.13410247932936

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..1 arrays with no 1 adjacent to 4 king-move neighboring 1s. A297102

Sum of n-th antidiagonal of array in A082002. A82005

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the upper median unequal to the lower median in every 2X2 subblock. A235849

Wiener index of graphs of f.c.c. unit cells in a line = Sum of distances in face-centered cubic grid unit cells connected in a row. A273322

Integers m, with k digits, such that m = ∑_i=1..k A003415(m without its i-th digit). A374368

Number of (n+1)X(2+1) 0..3 arrays with the upper median unequal to the lower median in every 2X2 subblock. A235844

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 389", based on the 5-celled von Neumann neighborhood. A271596

Number of n X 2 0..1 arrays with no 1 adjacent to 4 king-move neighboring 1s. A297096

Number of hypoplactic classes of 4-parking functions of length n. A243676

Numerators of continued fraction convergents to sqrt(564). A42080