404842 has 8 divisors (see below), whose sum is σ = 616032. Its totient is φ = 199500.

The previous prime is 404837. The next prime is 404843. The reversal of 404842 is 248404.

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

It is a plaindrome in base 13.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (404843) 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, 1284 + ... + 1567.

It is an arithmetic number, because the mean of its divisors is an integer number (77004).

2⁴⁰⁴⁸⁴² is an apocalyptic number.

404842 is a deficient number, since it is larger than the sum of its proper divisors (211190).

404842 is a wasteful number, since it uses less digits than its factorization.

404842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2924.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 404842 is about 636.2719544346. The cubic root of 404842 is about 73.9767397067.

The spelling of 404842 in words is "four hundred four thousand, eight hundred forty-two".