Properties of the Number 42828

Forty-Two Thousand Eight Hundred Twenty-Eight

Basics

Value: 42827 → 42828 → 42829

Parity: even

Prime: No

Previous Prime: 42821

Next Prime: 42829

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 43 × 83

Divisors: 1, 2, 3, 4, 6, 12, 43, 83, 86, 129

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011101001100

Octal: 123514

Duodecimal: 20950

Hexadecimal: a74c

Square: 1834237584

Square Root: 206.94926914584647

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

Recursively defined polynomials, read by row. A109086

Number of ordered septuples of distinct pairwise coprime positive integers with largest element n. A186978

Third column (m=4) of array A090452. A90453

Number of 6-element subsets of {1, 2, ..., n} having pairwise coprime elements. A186982

For 1<=x<=n, 1<=y<=n with gcd(x,y)=1, write 1 = gcd(x,y) = u·x+v·y with u,v minimal; a(n) = m²*s, where s is the population variance of the values of u+v and m is the number of such values. A345725

Numbers having four 6's in base 9. A43480

Numerators of continued fraction convergents to sqrt(945). A42828