Properties of the Number 42619

Forty-Two Thousand Six Hundred Nineteen

Basics

Value: 42618 → 42619 → 42620

Parity: odd

Prime: No

Previous Prime: 42611

Next Prime: 42641

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 17 × 23 × 109

Divisors: 1, 17, 23, 109, 391, 1853, 2507, 42619

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011001111011

Octal: 123173

Duodecimal: 207B7

Hexadecimal: a67b

Square: 1816379161

Square Root: 206.44369692485165

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

Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) and Hilbert 3-class field tower of exact length 3, except for the cases mentioned in the COMMENTS. A242878

Number of partitions of n into parts of 17 kinds. A23015

Numbers k such that 5*φ(k) = 4*σ(k). A65822

Least number·such that xⁿ has n digits equal to k. Case k=4. A285451

Expansion of ∏_n>=1 (1 - x^7·n)¹⁶/(1 - xⁿ)¹⁷ in powers of x. A282922

Numbers k such that 2^2k-1 + 2^k + 1 is prime. A108062

Number of distinct values of the sum of 4 products of three 0..n integers. A225261

Values of n such that prime(n) does not divide any 10-digit pandigital number (i.e. any value in A050278). A292703

Consider the 2^n-1 monic polynomials f(x) with coefficients 0 or 1, degree n and f(0)=1. Sequence gives triangle read by rows, in which T(n,k) (n>=1) is the number of such polynomials of thickness k (2 <= k <= n+1). A169940

Denominators of continued fraction convergents to sqrt(838). A42619