42891768 has 40 divisors (see below), whose sum is σ = 120138480. Its totient is φ = 14297040.

The previous prime is 42891743. The next prime is 42891791. The reversal of 42891768 is 86719824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 32448 + ... + 33743.

It is an arithmetic number, because the mean of its divisors is an integer number (3003462).

Almost surely, 2^42891768 is an apocalyptic number.

It is an amenable number.

42891768 is an abundant number, since it is smaller than the sum of its proper divisors (77246712).

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

42891768 is a wasteful number, since it uses less digits than its factorization.

42891768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66209 (or 66196 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 42891768 is about 6549.1807121196. The cubic root of 42891768 is about 350.0456212641.

The spelling of 42891768 in words is "forty-two million, eight hundred ninety-one thousand, seven hundred sixty-eight".