1320625240 has 32 divisors (see below), whose sum is σ = 3241535760. Its totient is φ = 480227200.

The previous prime is 1320625219. The next prime is 1320625253. The reversal of 1320625240 is 425260231.

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, 1500271 + ... + 1501150.

Almost surely, 2^1320625240 is an apocalyptic number.

1320625240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320625240 is an abundant number, since it is smaller than the sum of its proper divisors (1920910520).

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

1320625240 is a wasteful number, since it uses less digits than its factorization.

1320625240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3001443 (or 3001439 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1320625240 is about 36340.4078127915. The cubic root of 1320625240 is about 1097.1344811501.

Adding to 1320625240 its reverse (425260231), we get a palindrome (1745885471).

The spelling of 1320625240 in words is "one billion, three hundred twenty million, six hundred twenty-five thousand, two hundred forty".