404400342 has 16 divisors (see below), whose sum is σ = 820873152. Its totient is φ = 132788040.

The previous prime is 404400287. The next prime is 404400349. The reversal of 404400342 is 243004404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404400349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502584 + ... + 503387.

It is an arithmetic number, because the mean of its divisors is an integer number (51304572).

Almost surely, 2^404400342 is an apocalyptic number.

404400342 is an abundant number, since it is smaller than the sum of its proper divisors (416472810).

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

404400342 is a wasteful number, since it uses less digits than its factorization.

404400342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006043.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 404400342 is about 20109.7076557567. The cubic root of 404400342 is about 739.4982854355.

Adding to 404400342 its reverse (243004404), we get a palindrome (647404746).

The spelling of 404400342 in words is "four hundred four million, four hundred thousand, three hundred forty-two".