404204134 has 4 divisors (see below), whose sum is σ = 606306204. Its totient is φ = 202102066.

The previous prime is 404204123. The next prime is 404204137. The reversal of 404204134 is 431402404.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404204137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101051032 + ... + 101051035.

It is an arithmetic number, because the mean of its divisors is an integer number (151576551).

Almost surely, 2^404204134 is an apocalyptic number.

404204134 is a deficient number, since it is larger than the sum of its proper divisors (202102070).

404204134 is a wasteful number, since it uses less digits than its factorization.

404204134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202102069.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 404204134 is about 20104.8286239898. The cubic root of 404204134 is about 739.3786688602.

Adding to 404204134 its reverse (431402404), we get a palindrome (835606538).

The spelling of 404204134 in words is "four hundred four million, two hundred four thousand, one hundred thirty-four".