321404242 has 8 divisors (see below), whose sum is σ = 490009932. Its totient is φ = 158067600.

The previous prime is 321404203. The next prime is 321404257. The reversal of 321404242 is 242404123.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 320445801 + 958441 = 17901^2 + 979^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1317109 + ... + 1317352.

Almost surely, 2^321404242 is an apocalyptic number.

321404242 is a deficient number, since it is larger than the sum of its proper divisors (168605690).

321404242 is a wasteful number, since it uses less digits than its factorization.

321404242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634524.

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

The square root of 321404242 is about 17927.7506118308. The cubic root of 321404242 is about 684.9894270839.

Adding to 321404242 its reverse (242404123), we get a palindrome (563808365).

The spelling of 321404242 in words is "three hundred twenty-one million, four hundred four thousand, two hundred forty-two".