1320011240 has 32 divisors (see below), whose sum is σ = 3144734280. Its totient is φ = 496945152.

The previous prime is 1320011233. The next prime is 1320011261. The reversal of 1320011240 is 421100231.

It can be written as a sum of positive squares in 4 ways, for example, as 1319578276 + 432964 = 36326^2 + 658^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969917 + ... + 971276.

Almost surely, 2^1320011240 is an apocalyptic number.

1320011240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320011240 is an abundant number, since it is smaller than the sum of its proper divisors (1824723040).

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

1320011240 is a wasteful number, since it uses less digits than its factorization.

1320011240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941221 (or 1941217 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1320011240 is about 36331.9589342496. The cubic root of 1320011240 is about 1096.9644240749.

Adding to 1320011240 its reverse (421100231), we get a palindrome (1741111471).

The spelling of 1320011240 in words is "one billion, three hundred twenty million, eleven thousand, two hundred forty".