321042420432321 has 32 divisors (see below), whose sum is σ = 490952878540800. Its totient is φ = 182798305683840.

The previous prime is 321042420432281. The next prime is 321042420432329. The reversal of 321042420432321 is 123234024240123.

It is a happy number.

It is not a de Polignac number, because 321042420432321 - 2²¹ = 321042418335169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321042420432329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 998046450 + ... + 998368068.

It is an arithmetic number, because the mean of its divisors is an integer number (15342277454400).

Almost surely, 2^{321042420432321} is an apocalyptic number.

It is an amenable number.

321042420432321 is a deficient number, since it is larger than the sum of its proper divisors (169910458108479).

321042420432321 is a wasteful number, since it uses less digits than its factorization.

321042420432321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491069.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 321042420432321 its reverse (123234024240123), we get a palindrome (444276444672444).

The spelling of 321042420432321 in words is "three hundred twenty-one trillion, forty-two billion, four hundred twenty million, four hundred thirty-two thousand, three hundred twenty-one".