320542002140 has 12 divisors (see below), whose sum is σ = 673138204536. Its totient is φ = 128216800848.

The previous prime is 320542002083. The next prime is 320542002161. The reversal of 320542002140 is 41200245023.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8013550034 + ... + 8013550073.

It is an arithmetic number, because the mean of its divisors is an integer number (56094850378).

Almost surely, 2^320542002140 is an apocalyptic number.

It is an amenable number.

320542002140 is an abundant number, since it is smaller than the sum of its proper divisors (352596202396).

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

320542002140 is a wasteful number, since it uses less digits than its factorization.

320542002140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16027100116 (or 16027100114 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 320542002140 its reverse (41200245023), we get a palindrome (361742247163).

The spelling of 320542002140 in words is "three hundred twenty billion, five hundred forty-two million, two thousand, one hundred forty".