5121438542 has 16 divisors (see below), whose sum is σ = 8381722752. Its totient is φ = 2327596920.

The previous prime is 5121438523. The next prime is 5121438571. The reversal of 5121438542 is 2458341215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213983 + ... + 236709.

It is an arithmetic number, because the mean of its divisors is an integer number (523857672).

Almost surely, 2^5121438542 is an apocalyptic number.

5121438542 is a deficient number, since it is larger than the sum of its proper divisors (3260284210).

5121438542 is a wasteful number, since it uses less digits than its factorization.

5121438542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32983.

The product of its digits is 38400, while the sum is 35.

The square root of 5121438542 is about 71564.2266918326. The cubic root of 5121438542 is about 1723.7091559095.

Adding to 5121438542 its reverse (2458341215), we get a palindrome (7579779757).

The spelling of 5121438542 in words is "five billion, one hundred twenty-one million, four hundred thirty-eight thousand, five hundred forty-two".