804042 has 24 divisors (see below), whose sum is σ = 1834560. Its totient is φ = 253800.

The previous prime is 804031. The next prime is 804043. The reversal of 804042 is 240408.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (804043) by changing a digit.

804042 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 834 + ... + 1517.

It is an arithmetic number, because the mean of its divisors is an integer number (76440).

2⁸⁰⁴⁰⁴² is an apocalyptic number.

804042 is an abundant number, since it is smaller than the sum of its proper divisors (1030518).

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

804042 is a wasteful number, since it uses less digits than its factorization.

804042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378 (or 2375 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 804042 is about 896.6838907887. The cubic root of 804042 is about 92.9878582831.

The spelling of 804042 in words is "eight hundred four thousand, forty-two".