90107642 has 4 divisors (see below), whose sum is σ = 135161466. Its totient is φ = 45053820.

The previous prime is 90107639. The next prime is 90107653. The reversal of 90107642 is 24670109.

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., 90079081 + 28561 = 9491^2 + 169^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22526909 + ... + 22526912.

Almost surely, 2^90107642 is an apocalyptic number.

90107642 is a deficient number, since it is larger than the sum of its proper divisors (45053824).

90107642 is a wasteful number, since it uses less digits than its factorization.

90107642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45053823.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 90107642 is about 9492.5045167227. The cubic root of 90107642 is about 448.3190654639.

The spelling of 90107642 in words is "ninety million, one hundred seven thousand, six hundred forty-two".