Properties of the Number 42189

Forty-Two Thousand One Hundred Eighty-Nine

Basics

Value: 42188 → 42189 → 42190

Parity: odd

Prime: No

Previous Prime: 42187

Next Prime: 42193

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 ³ × 41

Divisors: 1, 3, 7, 21, 41, 49, 123, 147, 287, 343

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010011001101

Octal: 122315

Duodecimal: 204B9

Hexadecimal: a4cd

Square: 1779911721

Square Root: 205.39961051569693

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

Numbers m such that there are precisely 19 groups of order m. A298910

a(n) is smallest number such that number of primes produced according to rules stipulated in Honaker's A048853 is n. A50662

a(n) = (prime(1+n)*prime(n)) + prime(n) + 1. A286624

a(n) is the number of nonnegative integers k less than 10ⁿ such that the decimal representation of k lacks the digit 1, at least one of digits 2,3, at least one of digits 4,5,6 and at least one of digits 7,8,9. A126632

Where records occur in A209252. A276694

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, -1), (-1, 1, 1), (0, 1, 1), (1, -1, -1)}. A148262

Number of primes (excluding n) that may be generated by replacing any decimal digit of n with a digit from 0 to 9. A209252

Denominators of continued fraction convergents to sqrt(619). A42189