90113642 has 4 divisors (see below), whose sum is σ = 135170466. Its totient is φ = 45056820.

The previous prime is 90113627. The next prime is 90113659. The reversal of 90113642 is 24631109.

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., 85581001 + 4532641 = 9251^2 + 2129^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22528409 + ... + 22528412.

Almost surely, 2^90113642 is an apocalyptic number.

90113642 is a deficient number, since it is larger than the sum of its proper divisors (45056824).

90113642 is a wasteful number, since it uses less digits than its factorization.

90113642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45056823.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 90113642 is about 9492.8205502896. The cubic root of 90113642 is about 448.3290159876.

The spelling of 90113642 in words is "ninety million, one hundred thirteen thousand, six hundred forty-two".