42398378 has 16 divisors (see below), whose sum is σ = 69504480. Its totient is φ = 19237200.

The previous prime is 42398353. The next prime is 42398381. The reversal of 42398378 is 87389324.

42398378 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 7 ways as a sum of consecutive naturals, for example, 13808 + ... + 16596.

It is an arithmetic number, because the mean of its divisors is an integer number (4344030).

Almost surely, 2^42398378 is an apocalyptic number.

42398378 is a deficient number, since it is larger than the sum of its proper divisors (27106102).

42398378 is a wasteful number, since it uses less digits than its factorization.

42398378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493.

The product of its digits is 290304, while the sum is 44.

The square root of 42398378 is about 6511.4036889138. The cubic root of 42398378 is about 348.6982336889.

The spelling of 42398378 in words is "forty-two million, three hundred ninety-eight thousand, three hundred seventy-eight".