1320340139 has 12 divisors (see below), whose sum is σ = 1463564784. Its totient is φ = 1188637824.

The previous prime is 1320340129. The next prime is 1320340141. The reversal of 1320340139 is 9310430231.

It is a happy number.

It is not a de Polignac number, because 1320340139 - 2⁸ = 1320339883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320340129) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 92672 + ... + 105965.

It is an arithmetic number, because the mean of its divisors is an integer number (121963732).

Almost surely, 2^1320340139 is an apocalyptic number.

1320340139 is a deficient number, since it is larger than the sum of its proper divisors (143224645).

1320340139 is a wasteful number, since it uses less digits than its factorization.

1320340139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198694 (or 198677 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1320340139 is about 36336.4849565832. The cubic root of 1320340139 is about 1097.0555244459.

The spelling of 1320340139 in words is "one billion, three hundred twenty million, three hundred forty thousand, one hundred thirty-nine".