90690842 has 16 divisors (see below), whose sum is σ = 148780800. Its totient is φ = 41118240.

The previous prime is 90690833. The next prime is 90690877. The reversal of 90690842 is 24809609.

It is a junction number, because it is equal to n+sod(n) for n = 90690796 and 90690805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3959 + ... + 14037.

It is an arithmetic number, because the mean of its divisors is an integer number (9298800).

Almost surely, 2^90690842 is an apocalyptic number.

90690842 is a deficient number, since it is larger than the sum of its proper divisors (58089958).

90690842 is a wasteful number, since it uses less digits than its factorization.

90690842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10501.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 90690842 is about 9523.1739456969. The cubic root of 90690842 is about 449.2841986257.

The spelling of 90690842 in words is "ninety million, six hundred ninety thousand, eight hundred forty-two".