804392642 has 8 divisors (see below), whose sum is σ = 1206820416. Its totient is φ = 402119172.

The previous prime is 804392627. The next prime is 804392651. The reversal of 804392642 is 246293408.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 804392596 and 804392605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24518 + ... + 47009.

It is an arithmetic number, because the mean of its divisors is an integer number (150852552).

Almost surely, 2^804392642 is an apocalyptic number.

804392642 is a deficient number, since it is larger than the sum of its proper divisors (402427774).

804392642 is a wasteful number, since it uses less digits than its factorization.

804392642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77152.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 804392642 is about 28361.8166202379. The cubic root of 804392642 is about 930.0137362599.

The spelling of 804392642 in words is "eight hundred four million, three hundred ninety-two thousand, six hundred forty-two".