1320501240 has 48 divisors (see below), whose sum is σ = 4291630200. Its totient is φ = 352133568.

The previous prime is 1320501187. The next prime is 1320501289. The reversal of 1320501240 is 421050231.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1833670 + ... + 1834389.

Almost surely, 2^1320501240 is an apocalyptic number.

1320501240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320501240 is an abundant number, since it is smaller than the sum of its proper divisors (2971128960).

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

1320501240 is a wasteful number, since it uses less digits than its factorization.

1320501240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668076 (or 3668069 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1320501240 is about 36338.7016829165. The cubic root of 1320501240 is about 1097.1001416243.

Adding to 1320501240 its reverse (421050231), we get a palindrome (1741551471).

The spelling of 1320501240 in words is "one billion, three hundred twenty million, five hundred one thousand, two hundred forty".