4042656139 has 2 divisors, whose sum is σ = 4042656140. Its totient is φ = 4042656138.

The previous prime is 4042656119. The next prime is 4042656209. The reversal of 4042656139 is 9316562404.

4042656139 is digitally balanced in base 2 and base 3, because in such bases 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 4042656139 - 2⁹ = 4042655627 is a prime.

It is not a weakly prime, because it can be changed into another prime (4042656119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2021328069 + 2021328070.

It is an arithmetic number, because the mean of its divisors is an integer number (2021328070).

Almost surely, 2^4042656139 is an apocalyptic number.

4042656139 is a deficient number, since it is larger than the sum of its proper divisors (1).

4042656139 is an equidigital number, since it uses as much as digits as its factorization.

4042656139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 4042656139 is about 63581.8853054862. The cubic root of 4042656139 is about 1593.0238119732.

The spelling of 4042656139 in words is "four billion, forty-two million, six hundred fifty-six thousand, one hundred thirty-nine".