90202542 has 16 divisors (see below), whose sum is σ = 184805712. Its totient is φ = 29334080.

The previous prime is 90202513. The next prime is 90202543. The reversal of 90202542 is 24520209.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90202543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183093 + ... + 183584.

It is an arithmetic number, because the mean of its divisors is an integer number (11550357).

Almost surely, 2^90202542 is an apocalyptic number.

90202542 is an abundant number, since it is smaller than the sum of its proper divisors (94603170).

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

90202542 is a wasteful number, since it uses less digits than its factorization.

90202542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366723.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 90202542 is about 9497.5018820740. The cubic root of 90202542 is about 448.4763978537.

The spelling of 90202542 in words is "ninety million, two hundred two thousand, five hundred forty-two".