321430442 has 8 divisors (see below), whose sum is σ = 487563300. Its totient is φ = 158909344.

The previous prime is 321430409. The next prime is 321430453. The reversal of 321430442 is 244034123.

It can be written as a sum of positive squares in 2 ways, for example, as 318229921 + 3200521 = 17839^2 + 1789^2 .

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, 902717 + ... + 903072.

Almost surely, 2^321430442 is an apocalyptic number.

321430442 is a deficient number, since it is larger than the sum of its proper divisors (166132858).

321430442 is a wasteful number, since it uses less digits than its factorization.

321430442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805880.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 321430442 is about 17928.4813076847. The cubic root of 321430442 is about 685.0080394034.

Adding to 321430442 its reverse (244034123), we get a palindrome (565464565).

The spelling of 321430442 in words is "three hundred twenty-one million, four hundred thirty thousand, four hundred forty-two".