1320332303420 has 144 divisors (see below), whose sum is σ = 3017328928992. Its totient is φ = 485088215040.

The previous prime is 1320332303401. The next prime is 1320332303431. The reversal of 1320332303420 is 243032330231.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 1320332303420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 767188160 + ... + 767189880.

It is an arithmetic number, because the mean of its divisors is an integer number (20953673118).

Almost surely, 2^{1320332303420} is an apocalyptic number.

1320332303420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320332303420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1508664464496).

1320332303420 is an abundant number, since it is smaller than the sum of its proper divisors (1696996625572).

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

1320332303420 is a wasteful number, since it uses less digits than its factorization.

1320332303420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752 (or 2737 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 26.

Adding to 1320332303420 its reverse (243032330231), we get a palindrome (1563364633651).

The spelling of 1320332303420 in words is "one trillion, three hundred twenty billion, three hundred thirty-two million, three hundred three thousand, four hundred twenty".