90420874 has 8 divisors (see below), whose sum is σ = 135739008. Its totient is φ = 45174540.

The previous prime is 90420839. The next prime is 90420877. The reversal of 90420874 is 47802409.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (90420877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14682 + ... + 19909.

It is an arithmetic number, because the mean of its divisors is an integer number (16967376).

Almost surely, 2^90420874 is an apocalyptic number.

90420874 is a deficient number, since it is larger than the sum of its proper divisors (45318134).

90420874 is a wasteful number, since it uses less digits than its factorization.

90420874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35900.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 90420874 is about 9508.9891155685. The cubic root of 90420874 is about 448.8379466211.

The spelling of 90420874 in words is "ninety million, four hundred twenty thousand, eight hundred seventy-four".