90571842 has 12 divisors (see below), whose sum is σ = 196239030. Its totient is φ = 30190608.

The previous prime is 90571837. The next prime is 90571849. The reversal of 90571842 is 24817509.

90571842 is a `hidden beast` number, since 9 + 0 + 571 + 84 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 61638201 + 28933641 = 7851^2 + 5379^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 90571797 and 90571806.

It is not an unprimeable number, because it can be changed into a prime (90571849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2515867 + ... + 2515902.

Almost surely, 2^90571842 is an apocalyptic number.

90571842 is an abundant number, since it is smaller than the sum of its proper divisors (105667188).

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

90571842 is a wasteful number, since it uses less digits than its factorization.

90571842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5031777 (or 5031774 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 90571842 is about 9516.9239778407. The cubic root of 90571842 is about 449.0876031733.

The spelling of 90571842 in words is "ninety million, five hundred seventy-one thousand, eight hundred forty-two".