90842120 has 16 divisors (see below), whose sum is σ = 204394860. Its totient is φ = 36336832.

The previous prime is 90842119. The next prime is 90842137. The reversal of 90842120 is 2124809.

It can be written as a sum of positive squares in 2 ways, for example, as 81830116 + 9012004 = 9046^2 + 3002^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90842120.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1135487 + ... + 1135566.

Almost surely, 2^90842120 is an apocalyptic number.

It is an amenable number.

90842120 is an abundant number, since it is smaller than the sum of its proper divisors (113552740).

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

90842120 is a wasteful number, since it uses less digits than its factorization.

90842120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271064 (or 2271060 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 90842120 is about 9531.1132613142. The cubic root of 90842120 is about 449.5338712406.

Adding to 90842120 its reverse (2124809), we get a palindrome (92966929).

The spelling of 90842120 in words is "ninety million, eight hundred forty-two thousand, one hundred twenty".