42839394 has 32 divisors (see below), whose sum is σ = 92621760. Its totient is φ = 13131072.

The previous prime is 42839389. The next prime is 42839411. The reversal of 42839394 is 49393824.

It is a happy number.

42839394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 23052 + ... + 24840.

It is an arithmetic number, because the mean of its divisors is an integer number (2894430).

Almost surely, 2^42839394 is an apocalyptic number.

42839394 is an abundant number, since it is smaller than the sum of its proper divisors (49782366).

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

42839394 is a wasteful number, since it uses less digits than its factorization.

42839394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114.

The product of its digits is 186624, while the sum is 42.

The square root of 42839394 is about 6545.1809753436. The cubic root of 42839394 is about 349.9030860925.

The spelling of 42839394 in words is "forty-two million, eight hundred thirty-nine thousand, three hundred ninety-four".