90112542 has 32 divisors (see below), whose sum is σ = 195592320. Its totient is φ = 27512160.

The previous prime is 90112531. The next prime is 90112543. The reversal of 90112542 is 24521109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90112543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5809 + ... + 14627.

It is an arithmetic number, because the mean of its divisors is an integer number (6112260).

Almost surely, 2^90112542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90112542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97796160).

90112542 is an abundant number, since it is smaller than the sum of its proper divisors (105479778).

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

90112542 is a wasteful number, since it uses less digits than its factorization.

90112542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8968.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 90112542 is about 9492.7626115899. The cubic root of 90112542 is about 448.3271917580.

The spelling of 90112542 in words is "ninety million, one hundred twelve thousand, five hundred forty-two".