39406042 has 8 divisors (see below), whose sum is σ = 63655956. Its totient is φ = 18187392.

The previous prime is 39406039. The next prime is 39406111. The reversal of 39406042 is 24060493.

39406042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 38081241 + 1324801 = 6171^2 + 1151^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×39406042² = 3105672292211528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 39406042.

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 3 ways as a sum of consecutive naturals, for example, 757783 + ... + 757834.

Almost surely, 2^39406042 is an apocalyptic number.

39406042 is a deficient number, since it is larger than the sum of its proper divisors (24249914).

39406042 is a wasteful number, since it uses less digits than its factorization.

39406042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515632.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 39406042 is about 6277.4231974593. The cubic root of 39406042 is about 340.2939844844.

The spelling of 39406042 in words is "thirty-nine million, four hundred six thousand, forty-two".