Properties of the Number 42842

Forty-Two Thousand Eight Hundred Forty-Two

Basics

Value: 42841 → 42842 → 42843

Parity: even

Prime: No

Previous Prime: 42841

Next Prime: 42853

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 31 × 691

Divisors: 1, 2, 31, 62, 691, 1382, 21421, 42842

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011101011010

Octal: 123532

Duodecimal: 20962

Hexadecimal: a75a

Square: 1835436964

Square Root: 206.9830910968333

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

Expansion of ∏_m>=1 (1+x^m)². A22567

Least k > 0 such that gcd(kⁿ+5, (k+1)ⁿ+5) > 1, or 0 if there is no such k. A255855

Number of length 3 arrays x(i), i=1..3 with x(i) in i..i+n and no value appearing more than 2 times. A250352

Indices where A092243 strictly changes sign. A269737

a(n) is the smallest positive integer of length (distance from origin) n in the Cayley graph of the integers generated by all powers of 13. A297182

Triangle read by rows: T(n,k) = number of peakless Motzkin paths of length n and having k ascents (0<=k<=floor(n/3)). A114712

Smooth Lyndon words with 7 colors. A215334

Numbers k such that 25^k - 5^k - 1 is prime. A265483

Numerators of continued fraction convergents to sqrt(952). A42842

Numbers n such that 10·n^k + 1 is composite for all k > 0. A88783