5142638591 has 4 divisors (see below), whose sum is σ = 5413303800. Its totient is φ = 4871973384.

The previous prime is 5142638587. The next prime is 5142638593. The reversal of 5142638591 is 1958362415.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5142638591 - 2² = 5142638587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5142638593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135332576 + ... + 135332613.

It is an arithmetic number, because the mean of its divisors is an integer number (1353325950).

Almost surely, 2^5142638591 is an apocalyptic number.

5142638591 is a deficient number, since it is larger than the sum of its proper divisors (270665209).

5142638591 is a wasteful number, since it uses less digits than its factorization.

5142638591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270665208.

The product of its digits is 259200, while the sum is 44.

The square root of 5142638591 is about 71712.1927638529. The cubic root of 5142638591 is about 1726.0842966303.

The spelling of 5142638591 in words is "five billion, one hundred forty-two million, six hundred thirty-eight thousand, five hundred ninety-one".