42378308 has 12 divisors (see below), whose sum is σ = 84756672. Its totient is φ = 18162120.

The previous prime is 42378307. The next prime is 42378311. The reversal of 42378308 is 80387324.

42378308 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (42378307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756728 + ... + 756783.

It is an arithmetic number, because the mean of its divisors is an integer number (7063056).

Almost surely, 2^42378308 is an apocalyptic number.

It is an amenable number.

42378308 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.

42378308 is a wasteful number, since it uses less digits than its factorization.

42378308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513522 (or 1513520 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 42378308 is about 6509.8623641364. The cubic root of 42378308 is about 348.6432042401.

The spelling of 42378308 in words is "forty-two million, three hundred seventy-eight thousand, three hundred eight".