320123142420220 has 24 divisors (see below), whose sum is σ = 672406445897424. Its totient is φ = 128021095670016.

The previous prime is 320123142420203. The next prime is 320123142420377. The reversal of 320123142420220 is 22024241321023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1759987917 + ... + 1760169796.

It is an arithmetic number, because the mean of its divisors is an integer number (28016935245726).

Almost surely, 2^{320123142420220} is an apocalyptic number.

It is an amenable number.

320123142420220 is an abundant number, since it is smaller than the sum of its proper divisors (352283303477204).

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

320123142420220 is a wasteful number, since it uses less digits than its factorization.

320123142420220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3520162269 (or 3520162267 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 320123142420220 its reverse (22024241321023), we get a palindrome (342147383741243).

The spelling of 320123142420220 in words is "three hundred twenty trillion, one hundred twenty-three billion, one hundred forty-two million, four hundred twenty thousand, two hundred twenty".