90299242 has 24 divisors (see below), whose sum is σ = 154486080. Its totient is φ = 39255480.

The previous prime is 90299239. The next prime is 90299273. The reversal of 90299242 is 24299209.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7759 + ... + 15517.

It is an arithmetic number, because the mean of its divisors is an integer number (6436920).

Almost surely, 2^90299242 is an apocalyptic number.

90299242 is the 7759-th pentagonal number.

90299242 is a deficient number, since it is larger than the sum of its proper divisors (64186838).

90299242 is a wasteful number, since it uses less digits than its factorization.

90299242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7818 (or 7795 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 90299242 is about 9502.5913307897. The cubic root of 90299242 is about 448.6366009505.

The spelling of 90299242 in words is "ninety million, two hundred ninety-nine thousand, two hundred forty-two".