42039218 has 32 divisors (see below), whose sum is σ = 69807360. Its totient is φ = 18869760.

The previous prime is 42039163. The next prime is 42039223. The reversal of 42039218 is 81293024.

42039218 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, 199133 + ... + 199343.

It is an arithmetic number, because the mean of its divisors is an integer number (2181480).

Almost surely, 2^42039218 is an apocalyptic number.

42039218 is a deficient number, since it is larger than the sum of its proper divisors (27768142).

42039218 is a wasteful number, since it uses less digits than its factorization.

42039218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 42039218 is about 6483.7657267980. The cubic root of 42039218 is about 347.7108235394.

The spelling of 42039218 in words is "forty-two million, thirty-nine thousand, two hundred eighteen".