90451842 has 24 divisors (see below), whose sum is σ = 195891984. Its totient is φ = 27831024.

The previous prime is 90451817. The next prime is 90451853. The reversal of 90451842 is 24815409.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43588 + ... + 45615.

It is an arithmetic number, because the mean of its divisors is an integer number (8162166).

Almost surely, 2^90451842 is an apocalyptic number.

90451842 is an abundant number, since it is smaller than the sum of its proper divisors (105440142).

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

90451842 is a wasteful number, since it uses less digits than its factorization.

90451842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89234 (or 89221 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 90451842 is about 9510.6173301211. The cubic root of 90451842 is about 448.8891812030.

The spelling of 90451842 in words is "ninety million, four hundred fifty-one thousand, eight hundred forty-two".