42904822 has 4 divisors (see below), whose sum is σ = 64357236. Its totient is φ = 21452410.

The previous prime is 42904769. The next prime is 42904861. The reversal of 42904822 is 22840924.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10726204 + ... + 10726207.

It is an arithmetic number, because the mean of its divisors is an integer number (16089309).

Almost surely, 2^42904822 is an apocalyptic number.

42904822 is a deficient number, since it is larger than the sum of its proper divisors (21452414).

42904822 is a wasteful number, since it uses less digits than its factorization.

42904822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21452413.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 42904822 is about 6550.1772495101. The cubic root of 42904822 is about 350.0811294922.

The spelling of 42904822 in words is "forty-two million, nine hundred four thousand, eight hundred twenty-two".