90040234242 has 64 divisors (see below), whose sum is σ = 207979075584. Its totient is φ = 25455513600.

The previous prime is 90040234241. The next prime is 90040234259. The reversal of 90040234242 is 24243204009.

It is not an unprimeable number, because it can be changed into a prime (90040234241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1602273 + ... + 1657515.

It is an arithmetic number, because the mean of its divisors is an integer number (3249673056).

Almost surely, 2^90040234242 is an apocalyptic number.

90040234242 is an abundant number, since it is smaller than the sum of its proper divisors (117938841342).

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

90040234242 is a wasteful number, since it uses less digits than its factorization.

90040234242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55663.

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 90040234242 in words is "ninety billion, forty million, two hundred thirty-four thousand, two hundred forty-two".