1320234729 has 8 divisors (see below), whose sum is σ = 1920341472. Its totient is φ = 800142240.

The previous prime is 1320234701. The next prime is 1320234757. The reversal of 1320234729 is 9274320231.

It is an interprime number because it is at equal distance from previous prime (1320234701) and next prime (1320234757).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1320234729 - 2²⁰ = 1319186153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 40007113 = 1320234729 / (1 + 3 + 2 + 0 + 2 + 3 + 4 + 7 + 2 + 9).

It is a self number, because there is not a number n which added to its sum of digits gives 1320234729.

It is not an unprimeable number, because it can be changed into a prime (1320224729) 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 7 ways as a sum of consecutive naturals, for example, 20003524 + ... + 20003589.

It is an arithmetic number, because the mean of its divisors is an integer number (240042684).

Almost surely, 2^1320234729 is an apocalyptic number.

It is an amenable number.

1320234729 is a deficient number, since it is larger than the sum of its proper divisors (600106743).

1320234729 is a wasteful number, since it uses less digits than its factorization.

1320234729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40007127.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 1320234729 is about 36335.0344571187. The cubic root of 1320234729 is about 1097.0263290144.

The spelling of 1320234729 in words is "one billion, three hundred twenty million, two hundred thirty-four thousand, seven hundred twenty-nine".