90712842 has 16 divisors (see below), whose sum is σ = 197919072. Its totient is φ = 27488720.

The previous prime is 90712823. The next prime is 90712877. The reversal of 90712842 is 24821709.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687153 + ... + 687284.

It is an arithmetic number, because the mean of its divisors is an integer number (12369942).

Almost surely, 2^90712842 is an apocalyptic number.

90712842 is an abundant number, since it is smaller than the sum of its proper divisors (107206230).

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

90712842 is a wasteful number, since it uses less digits than its factorization.

90712842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374453.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 90712842 is about 9524.3289527399. The cubic root of 90712842 is about 449.3205251647.

The spelling of 90712842 in words is "ninety million, seven hundred twelve thousand, eight hundred forty-two".