320143502442 has 32 divisors (see below), whose sum is σ = 648469785600. Its totient is φ = 105351028848.

The previous prime is 320143502411. The next prime is 320143502453. The reversal of 320143502442 is 244205341023.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4428753 + ... + 4500459.

It is an arithmetic number, because the mean of its divisors is an integer number (20264680800).

Almost surely, 2^320143502442 is an apocalyptic number.

320143502442 is an abundant number, since it is smaller than the sum of its proper divisors (328326283158).

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

320143502442 is a wasteful number, since it uses less digits than its factorization.

320143502442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81210.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 320143502442 its reverse (244205341023), we get a palindrome (564348843465).

The spelling of 320143502442 in words is "three hundred twenty billion, one hundred forty-three million, five hundred two thousand, four hundred forty-two".