90430297849242 has 72 divisors (see below), whose sum is σ = 212419323920700. Its totient is φ = 27791142073344.

The previous prime is 90430297849181. The next prime is 90430297849249. The reversal of 90430297849242 is 24294879203409.

90430297849242 is a `hidden beast` number, since 9 + 0 + 4 + 30 + 2 + 9 + 78 + 492 + 42 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 48007728995121 + 42422568854121 = 6928761^2 + 6513261^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90430297849242.

It is not an unprimeable number, because it can be changed into a prime (90430297849249) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15407767 + ... + 20451402.

Almost surely, 2^{90430297849242} is an apocalyptic number.

90430297849242 is an abundant number, since it is smaller than the sum of its proper divisors (121989026071458).

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

90430297849242 is a wasteful number, since it uses less digits than its factorization.

90430297849242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35860032 (or 35860016 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 63.

The spelling of 90430297849242 in words is "ninety trillion, four hundred thirty billion, two hundred ninety-seven million, eight hundred forty-nine thousand, two hundred forty-two".