90403385542 has 4 divisors (see below), whose sum is σ = 135605078316. Its totient is φ = 45201692770.

The previous prime is 90403385539. The next prime is 90403385549. The reversal of 90403385542 is 24558330409.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90403385549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22600846384 + ... + 22600846387.

It is an arithmetic number, because the mean of its divisors is an integer number (33901269579).

Almost surely, 2^90403385542 is an apocalyptic number.

90403385542 is a deficient number, since it is larger than the sum of its proper divisors (45201692774).

90403385542 is a wasteful number, since it uses less digits than its factorization.

90403385542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45201692773.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 90403385542 in words is "ninety billion, four hundred three million, three hundred eighty-five thousand, five hundred forty-two".