39378042 has 32 divisors (see below), whose sum is σ = 95463360. Its totient is φ = 11932560.

The previous prime is 39378041. The next prime is 39378049. The reversal of 39378042 is 24087393.

It is a junction number, because it is equal to n+sod(n) for n = 39377988 and 39378006.

It is not an unprimeable number, because it can be changed into a prime (39378041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32553 + ... + 33740.

It is an arithmetic number, because the mean of its divisors is an integer number (2983230).

Almost surely, 2^39378042 is an apocalyptic number.

39378042 is an abundant number, since it is smaller than the sum of its proper divisors (56085318).

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

39378042 is a wasteful number, since it uses less digits than its factorization.

39378042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66315 (or 66309 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 39378042 is about 6275.1925866861. The cubic root of 39378042 is about 340.2133666507.

The spelling of 39378042 in words is "thirty-nine million, three hundred seventy-eight thousand, forty-two".