804940842 has 8 divisors (see below), whose sum is σ = 1609881696. Its totient is φ = 268313612.

The previous prime is 804940841. The next prime is 804940853. The reversal of 804940842 is 248049408.

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

804940842 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 804940842.

It is not an unprimeable number, because it can be changed into a prime (804940841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67078398 + ... + 67078409.

It is an arithmetic number, because the mean of its divisors is an integer number (201235212).

Almost surely, 2^804940842 is an apocalyptic number.

804940842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

804940842 is a wasteful number, since it uses less digits than its factorization.

804940842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134156812.

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 804940842 is about 28371.4793763032. The cubic root of 804940842 is about 930.2249588764.

The spelling of 804940842 in words is "eight hundred four million, nine hundred forty thousand, eight hundred forty-two".