321445242 has 12 divisors (see below), whose sum is σ = 696464730. Its totient is φ = 107148408.

The previous prime is 321445219. The next prime is 321445279. The reversal of 321445242 is 242544123.

It can be written as a sum of positive squares in only one way, i.e., 238980681 + 82464561 = 15459^2 + 9081^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8929017 + ... + 8929052.

Almost surely, 2^321445242 is an apocalyptic number.

321445242 is an abundant number, since it is smaller than the sum of its proper divisors (375019488).

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

321445242 is a wasteful number, since it uses less digits than its factorization.

321445242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17858077 (or 17858074 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 321445242 is about 17928.8940540124. The cubic root of 321445242 is about 685.0185527857.

Adding to 321445242 its reverse (242544123), we get a palindrome (563989365).

The spelling of 321445242 in words is "three hundred twenty-one million, four hundred forty-five thousand, two hundred forty-two".