90440242 has 8 divisors (see below), whose sum is σ = 136559232. Its totient is φ = 44920500.

The previous prime is 90440239. The next prime is 90440261. The reversal of 90440242 is 24204409.

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

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, 149434 + ... + 150037.

It is an arithmetic number, because the mean of its divisors is an integer number (17069904).

Almost surely, 2^90440242 is an apocalyptic number.

90440242 is a deficient number, since it is larger than the sum of its proper divisors (46118990).

90440242 is a wasteful number, since it uses less digits than its factorization.

90440242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299624.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 90440242 is about 9510.0074658225. The cubic root of 90440242 is about 448.8699911125.

The spelling of 90440242 in words is "ninety million, four hundred forty thousand, two hundred forty-two".