42039618 has 32 divisors (see below), whose sum is σ = 87350400. Its totient is φ = 13472256.

The previous prime is 42039611. The next prime is 42039629. The reversal of 42039618 is 81693024.

It is not an unprimeable number, because it can be changed into a prime (42039611) 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, 62130 + ... + 62802.

It is an arithmetic number, because the mean of its divisors is an integer number (2729700).

Almost surely, 2^42039618 is an apocalyptic number.

42039618 is an abundant number, since it is smaller than the sum of its proper divisors (45310782).

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

42039618 is a wasteful number, since it uses less digits than its factorization.

42039618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 42039618 is about 6483.7965729964. The cubic root of 42039618 is about 347.7119263500.

The spelling of 42039618 in words is "forty-two million, thirty-nine thousand, six hundred eighteen".