1200340109 has 4 divisors (see below), whose sum is σ = 1206433404. Its totient is φ = 1194246816.

The previous prime is 1200340103. The next prime is 1200340111. The reversal of 1200340109 is 9010430021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 863066884 + 337273225 = 29378^2 + 18365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200340109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200340103) 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 3 ways as a sum of consecutive naturals, for example, 3046352 + ... + 3046745.

It is an arithmetic number, because the mean of its divisors is an integer number (301608351).

Almost surely, 2^1200340109 is an apocalyptic number.

It is an amenable number.

1200340109 is a deficient number, since it is larger than the sum of its proper divisors (6093295).

1200340109 is an equidigital number, since it uses as much as digits as its factorization.

1200340109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6093294.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1200340109 is about 34645.9248541585. The cubic root of 1200340109 is about 1062.7589540725.

The spelling of 1200340109 in words is "one billion, two hundred million, three hundred forty thousand, one hundred nine".