90039042 has 24 divisors (see below), whose sum is σ = 195287040. Its totient is φ = 29981880.

The previous prime is 90039041. The next prime is 90039049. The reversal of 90039042 is 24093009.

It is a junction number, because it is equal to n+sod(n) for n = 90038997 and 90039015.

It is not an unprimeable number, because it can be changed into a prime (90039041) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 21067 + ... + 24977.

It is an arithmetic number, because the mean of its divisors is an integer number (8136960).

Almost surely, 2^90039042 is an apocalyptic number.

90039042 is an abundant number, since it is smaller than the sum of its proper divisors (105247998).

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

90039042 is a wasteful number, since it uses less digits than its factorization.

90039042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5198 (or 5195 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 90039042 is about 9488.8904514701. The cubic root of 90039042 is about 448.2052664004.

The spelling of 90039042 in words is "ninety million, thirty-nine thousand, forty-two".