42931626 has 8 divisors (see below), whose sum is σ = 85863264. Its totient is φ = 14310540.

The previous prime is 42931601. The next prime is 42931631. The reversal of 42931626 is 62613924.

42931626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

42931626 is an admirable number.

It is a super-2 number, since 2×42931626² = 3686249022007752, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3577630 + ... + 3577641.

It is an arithmetic number, because the mean of its divisors is an integer number (10732908).

Almost surely, 2^42931626 is an apocalyptic number.

42931626 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42931626 is a wasteful number, since it uses less digits than its factorization.

42931626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7155276.

The product of its digits is 15552, while the sum is 33.

The square root of 42931626 is about 6552.2229815537. Note that the first 3 decimals coincide. The cubic root of 42931626 is about 350.1540165692.

The spelling of 42931626 in words is "forty-two million, nine hundred thirty-one thousand, six hundred twenty-six".