90142194 has 64 divisors (see below), whose sum is σ = 202815360. Its totient is φ = 26542080.

The previous prime is 90142181. The next prime is 90142207. The reversal of 90142194 is 49124109.

It is an interprime number because it is at equal distance from previous prime (90142181) and next prime (90142207).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 373914 + ... + 374154.

It is an arithmetic number, because the mean of its divisors is an integer number (3168990).

Almost surely, 2^90142194 is an apocalyptic number.

90142194 is an abundant number, since it is smaller than the sum of its proper divisors (112673166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90142194 is a wasteful number, since it uses less digits than its factorization.

90142194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 90142194 is about 9494.3243045516. The cubic root of 90142194 is about 448.3763611623.

The spelling of 90142194 in words is "ninety million, one hundred forty-two thousand, one hundred ninety-four".