90066842 has 12 divisors (see below), whose sum is σ = 139601898. Its totient is φ = 43579800.

The previous prime is 90066841. The next prime is 90066877. The reversal of 90066842 is 24866009.

It can be written as a sum of positive squares in only one way, i.e., 80263681 + 9803161 = 8959^2 + 3131^2 .

It is a super-2 number, since 2×90066842² = 16224072055705928, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (90066841) 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, 21509 + ... + 25352.

Almost surely, 2^90066842 is an apocalyptic number.

90066842 is a deficient number, since it is larger than the sum of its proper divisors (49535056).

90066842 is a wasteful number, since it uses less digits than its factorization.

90066842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46925 (or 46894 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 90066842 is about 9490.3552093691. The cubic root of 90066842 is about 448.2513901854.

The spelling of 90066842 in words is "ninety million, sixty-six thousand, eight hundred forty-two".