320120420424 has 64 divisors (see below), whose sum is σ = 914755497600. Its totient is φ = 91450404864.

The previous prime is 320120420407. The next prime is 320120420429. The reversal of 320120420424 is 424024021023.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 320120420394 and 320120420403.

It is not an unprimeable number, because it can be changed into a prime (320120420429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1130934 + ... + 1385370.

It is an arithmetic number, because the mean of its divisors is an integer number (14293054650).

Almost surely, 2^320120420424 is an apocalyptic number.

It is an amenable number.

320120420424 is an abundant number, since it is smaller than the sum of its proper divisors (594635077176).

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

320120420424 is a wasteful number, since it uses less digits than its factorization.

320120420424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261942 (or 261938 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 320120420424 its reverse (424024021023), we get a palindrome (744144441447).

The spelling of 320120420424 in words is "three hundred twenty billion, one hundred twenty million, four hundred twenty thousand, four hundred twenty-four".