90941742242 has 54 divisors (see below), whose sum is σ = 151356449043. Its totient is φ = 40962358944.

The previous prime is 90941742223. The next prime is 90941742293. The reversal of 90941742242 is 24224714909.

It can be written as a sum of positive squares in 5 ways, for example, as 32285261761 + 58656480481 = 179681^2 + 242191^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=213239.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90941742193 and 90941742202.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 260577884 + ... + 260578232.

Almost surely, 2^90941742242 is an apocalyptic number.

90941742242 is a deficient number, since it is larger than the sum of its proper divisors (60414706801).

90941742242 is an equidigital number, since it uses as much as digits as its factorization.

90941742242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 90941742242 in words is "ninety billion, nine hundred forty-one million, seven hundred forty-two thousand, two hundred forty-two".