320421120 has 72 divisors (see below), whose sum is σ = 1023357216. Its totient is φ = 85444608.

The previous prime is 320421107. The next prime is 320421133. The reversal of 320421120 is 21124023.

It is an interprime number because it is at equal distance from previous prime (320421107) and next prime (320421133).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 320421120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37882 + ... + 45561.

Almost surely, 2^320421120 is an apocalyptic number.

320421120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320421120 is an abundant number, since it is smaller than the sum of its proper divisors (702936096).

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

320421120 is an equidigital number, since it uses as much as digits as its factorization.

320421120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83467 (or 83453 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 320421120 is about 17900.3106118302. The cubic root of 320421120 is about 684.2902909271.

Adding to 320421120 its reverse (21124023), we get a palindrome (341545143).

The spelling of 320421120 in words is "three hundred twenty million, four hundred twenty-one thousand, one hundred twenty".