90908142 has 24 divisors (see below), whose sum is σ = 196880184. Its totient is φ = 27971424.

The previous prime is 90908113. The next prime is 90908143. The reversal of 90908142 is 24180909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90908143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43813 + ... + 45840.

It is an arithmetic number, because the mean of its divisors is an integer number (8203341).

Almost surely, 2^90908142 is an apocalyptic number.

90908142 is an abundant number, since it is smaller than the sum of its proper divisors (105972042).

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

90908142 is a wasteful number, since it uses less digits than its factorization.

90908142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89684 (or 89671 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 90908142 is about 9534.5761311135. The cubic root of 90908142 is about 449.6427485547.

The spelling of 90908142 in words is "ninety million, nine hundred eight thousand, one hundred forty-two".