90406842 has 8 divisors (see below), whose sum is σ = 180813696. Its totient is φ = 30135612.

The previous prime is 90406831. The next prime is 90406843. The reversal of 90406842 is 24860409.

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

90406842 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (90406843) 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, 7533898 + ... + 7533909.

It is an arithmetic number, because the mean of its divisors is an integer number (22601712).

Almost surely, 2^90406842 is an apocalyptic number.

90406842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

90406842 is a wasteful number, since it uses less digits than its factorization.

90406842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15067812.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 90406842 is about 9508.2512587752. The cubic root of 90406842 is about 448.8147277204.

The spelling of 90406842 in words is "ninety million, four hundred six thousand, eight hundred forty-two".