5142638539 has 2 divisors, whose sum is σ = 5142638540. Its totient is φ = 5142638538.

The previous prime is 5142638537. The next prime is 5142638587. The reversal of 5142638539 is 9358362415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5142638539 - 2¹ = 5142638537 is a prime.

It is a super-2 number, since 2×5142638539² = 52893462285616109042, which contains 22 as substring.

Together with 5142638537, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5142638537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2571319269 + 2571319270.

It is an arithmetic number, because the mean of its divisors is an integer number (2571319270).

Almost surely, 2^5142638539 is an apocalyptic number.

5142638539 is a deficient number, since it is larger than the sum of its proper divisors (1).

5142638539 is an equidigital number, since it uses as much as digits as its factorization.

5142638539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 46.

The square root of 5142638539 is about 71712.1924012925. The cubic root of 5142638539 is about 1726.0842908125.

The spelling of 5142638539 in words is "five billion, one hundred forty-two million, six hundred thirty-eight thousand, five hundred thirty-nine".