321142404 has 96 divisors (see below), whose sum is σ = 865751040. Its totient is φ = 91728000.

The previous prime is 321142387. The next prime is 321142411. The reversal of 321142404 is 404241123.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163629 + ... + 165579.

It is an arithmetic number, because the mean of its divisors is an integer number (9018240).

Almost surely, 2^321142404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321142404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432875520).

321142404 is an abundant number, since it is smaller than the sum of its proper divisors (544608636).

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

321142404 is a wasteful number, since it uses less digits than its factorization.

321142404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041 (or 2039 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 321142404 is about 17920.4465346151. The cubic root of 321142404 is about 684.8033633822.

Adding to 321142404 its reverse (404241123), we get a palindrome (725383527).

The spelling of 321142404 in words is "three hundred twenty-one million, one hundred forty-two thousand, four hundred four".