1301200139 has 2 divisors, whose sum is σ = 1301200140. Its totient is φ = 1301200138.

The previous prime is 1301200097. The next prime is 1301200141. The reversal of 1301200139 is 9310021031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1301200139 - 2⁸ = 1301199883 is a prime.

Together with 1301200141, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1301200139.

It is not a weakly prime, because it can be changed into another prime (1301200189) 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 as a sum of consecutive naturals, namely, 650600069 + 650600070.

It is an arithmetic number, because the mean of its divisors is an integer number (650600070).

Almost surely, 2^1301200139 is an apocalyptic number.

1301200139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301200139 is an equidigital number, since it uses as much as digits as its factorization.

1301200139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 1301200139 is about 36072.1518487600. The cubic root of 1301200139 is about 1091.7286318562.

The spelling of 1301200139 in words is "one billion, three hundred one million, two hundred thousand, one hundred thirty-nine".