90042677420 has 24 divisors (see below), whose sum is σ = 190578522624. Its totient is φ = 35733470976.

The previous prime is 90042677371. The next prime is 90042677429. The reversal of 90042677420 is 2477624009.

It is not an unprimeable number, because it can be changed into a prime (90042677429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17722397 + ... + 17727476.

It is an arithmetic number, because the mean of its divisors is an integer number (7940771776).

Almost surely, 2^90042677420 is an apocalyptic number.

It is an amenable number.

90042677420 is an abundant number, since it is smaller than the sum of its proper divisors (100535845204).

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

90042677420 is a wasteful number, since it uses less digits than its factorization.

90042677420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35450009 (or 35450007 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 90042677420 in words is "ninety billion, forty-two million, six hundred seventy-seven thousand, four hundred twenty".