1320340129 has 2 divisors, whose sum is σ = 1320340130. Its totient is φ = 1320340128.

The previous prime is 1320340117. The next prime is 1320340141. The reversal of 1320340129 is 9210430231.

It is a balanced prime because it is at equal distance from previous prime (1320340117) and next prime (1320340141).

It can be written as a sum of positive squares in only one way, i.e., 731161600 + 589178529 = 27040^2 + 24273^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320340129 - 2¹⁵ = 1320307361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320340169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660170064 + 660170065.

It is an arithmetic number, because the mean of its divisors is an integer number (660170065).

Almost surely, 2^1320340129 is an apocalyptic number.

It is an amenable number.

1320340129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320340129 is an equidigital number, since it uses as much as digits as its factorization.

1320340129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1320340129 is about 36336.4848189805. The cubic root of 1320340129 is about 1097.0555216763.

The spelling of 1320340129 in words is "one billion, three hundred twenty million, three hundred forty thousand, one hundred twenty-nine".