90020042 has 8 divisors (see below), whose sum is σ = 154320096. Its totient is φ = 38580012.

The previous prime is 90020039. The next prime is 90020069. The reversal of 90020042 is 24002009.

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

It is a self number, because there is not a number n which added to its sum of digits gives 90020042.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3214988 + ... + 3215015.

It is an arithmetic number, because the mean of its divisors is an integer number (19290012).

Almost surely, 2^90020042 is an apocalyptic number.

90020042 is a deficient number, since it is larger than the sum of its proper divisors (64300054).

90020042 is a wasteful number, since it uses less digits than its factorization.

90020042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6430012.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 90020042 is about 9487.8892278525. The cubic root of 90020042 is about 448.1737374882.

The spelling of 90020042 in words is "ninety million, twenty thousand, forty-two".