7942139041 has 2 divisors, whose sum is σ = 7942139042. Its totient is φ = 7942139040.

The previous prime is 7942139021. The next prime is 7942139071. The reversal of 7942139041 is 1409312497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5534764816 + 2407374225 = 74396^2 + 49065^2 .

It is a cyclic number.

It is not a de Polignac number, because 7942139041 - 2¹⁵ = 7942106273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7942138985 and 7942139003.

It is not a weakly prime, because it can be changed into another prime (7942139011) 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, 3971069520 + 3971069521.

It is an arithmetic number, because the mean of its divisors is an integer number (3971069521).

Almost surely, 2^7942139041 is an apocalyptic number.

It is an amenable number.

7942139041 is a deficient number, since it is larger than the sum of its proper divisors (1).

7942139041 is an equidigital number, since it uses as much as digits as its factorization.

7942139041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 7942139041 is about 89118.6795290415. The cubic root of 7942139041 is about 1995.1665818610.

The spelling of 7942139041 in words is "seven billion, nine hundred forty-two million, one hundred thirty-nine thousand, forty-one".