7942139011 has 2 divisors, whose sum is σ = 7942139012. Its totient is φ = 7942139010.

The previous prime is 7942138933. The next prime is 7942139017. The reversal of 7942139011 is 1109312497.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7942139011 - 2⁹ = 7942138499 is a prime.

It is not a weakly prime, because it can be changed into another prime (7942139017) 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, 3971069505 + 3971069506.

It is an arithmetic number, because the mean of its divisors is an integer number (3971069506).

Almost surely, 2^7942139011 is an apocalyptic number.

7942139011 is a deficient number, since it is larger than the sum of its proper divisors (1).

7942139011 is an equidigital number, since it uses as much as digits as its factorization.

7942139011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 7942139011 is about 89118.6793607266. The cubic root of 7942139011 is about 1995.1665793489.

The spelling of 7942139011 in words is "seven billion, nine hundred forty-two million, one hundred thirty-nine thousand, eleven".