Properties of the Number 42185

Forty-Two Thousand One Hundred Eighty-Five

Basics

Value: 42184 → 42185 → 42186

Parity: odd

Prime: No

Previous Prime: 42181

Next Prime: 42187

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 11 × 13 × 59

Divisors: 1, 5, 11, 13, 55, 59, 65, 143, 295, 649

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010011001001

Octal: 122311

Duodecimal: 204B5

Hexadecimal: a4c9

Square: 1779574225

Square Root: 205.38987316808002

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

a(n) = A026615(2·n-1, n-1). A26619

a(n) = A026615(n, floor(n/2)). A26621

The successive approximations up to 7ⁿ for 7-adic integer 5^1/5. A309453

"DHK[ 7 ]" (bracelet, identity, unlabeled, 7 parts) transform of 1,1,1,1,... A32248

a(n) is the smallest j which satisfies (j² + k)/(j + k²) = n where j,k are integers and j >= k > 0. A290332

Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+2x+2y>0. A211624

Denominators of continued fraction convergents to sqrt(617). A42185