1320425140 has 48 divisors (see below), whose sum is σ = 2928481920. Its totient is φ = 498718080.

The previous prime is 1320425089. The next prime is 1320425153. The reversal of 1320425140 is 415240231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112594 + ... + 123766.

It is an arithmetic number, because the mean of its divisors is an integer number (61010040).

Almost surely, 2^1320425140 is an apocalyptic number.

1320425140 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 1320425140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464240960).

1320425140 is an abundant number, since it is smaller than the sum of its proper divisors (1608056780).

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

1320425140 is a wasteful number, since it uses less digits than its factorization.

1320425140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11512 (or 11510 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1320425140 is about 36337.6545748346. The cubic root of 1320425140 is about 1097.0790660604.

Adding to 1320425140 its reverse (415240231), we get a palindrome (1735665371).

The spelling of 1320425140 in words is "one billion, three hundred twenty million, four hundred twenty-five thousand, one hundred forty".