4042135991 has 2 divisors, whose sum is σ = 4042135992. Its totient is φ = 4042135990.

The previous prime is 4042135987. The next prime is 4042135997. The reversal of 4042135991 is 1995312404.

4042135991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4042135991 - 2² = 4042135987 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4042135997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2021067995 + 2021067996.

It is an arithmetic number, because the mean of its divisors is an integer number (2021067996).

Almost surely, 2^4042135991 is an apocalyptic number.

4042135991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4042135991 is an equidigital number, since it uses as much as digits as its factorization.

4042135991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 4042135991 is about 63577.7947950383. The cubic root of 4042135991 is about 1592.9554869528.

The spelling of 4042135991 in words is "four billion, forty-two million, one hundred thirty-five thousand, nine hundred ninety-one".