404042234 has 4 divisors (see below), whose sum is σ = 606063354. Its totient is φ = 202021116.

The previous prime is 404042231. The next prime is 404042263. The reversal of 404042234 is 432240404.

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

It can be written as a sum of positive squares in only one way, i.e., 215062225 + 188980009 = 14665^2 + 13747^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (404042231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010557 + ... + 101010560.

Almost surely, 2^404042234 is an apocalyptic number.

404042234 is a deficient number, since it is larger than the sum of its proper divisors (202021120).

404042234 is a wasteful number, since it uses less digits than its factorization.

404042234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202021119.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 404042234 is about 20100.8018248029. The cubic root of 404042234 is about 739.2799387201.

Adding to 404042234 its reverse (432240404), we get a palindrome (836282638).

The spelling of 404042234 in words is "four hundred four million, forty-two thousand, two hundred thirty-four".