404420134 has 4 divisors (see below), whose sum is σ = 606630204. Its totient is φ = 202210066.

The previous prime is 404420119. The next prime is 404420143. The reversal of 404420134 is 431024404.

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101105032 + ... + 101105035.

It is an arithmetic number, because the mean of its divisors is an integer number (151657551).

Almost surely, 2^404420134 is an apocalyptic number.

404420134 is a deficient number, since it is larger than the sum of its proper divisors (202210070).

404420134 is a wasteful number, since it uses less digits than its factorization.

404420134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202210069.

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

The square root of 404420134 is about 20110.1997503754. The cubic root of 404420134 is about 739.5103493153.

Adding to 404420134 its reverse (431024404), we get a palindrome (835444538).

The spelling of 404420134 in words is "four hundred four million, four hundred twenty thousand, one hundred thirty-four".