90310042 has 4 divisors (see below), whose sum is σ = 135465066. Its totient is φ = 45155020.

The previous prime is 90310027. The next prime is 90310109. The reversal of 90310042 is 24001309.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 79227801 + 11082241 = 8901^2 + 3329^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22577509 + ... + 22577512.

Almost surely, 2^90310042 is an apocalyptic number.

90310042 is a deficient number, since it is larger than the sum of its proper divisors (45155024).

90310042 is a wasteful number, since it uses less digits than its factorization.

90310042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45155023.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 90310042 is about 9503.1595798450. The cubic root of 90310042 is about 448.6544862322.

The spelling of 90310042 in words is "ninety million, three hundred ten thousand, forty-two".