5142385721 has 8 divisors (see below), whose sum is σ = 5612436864. Its totient is φ = 4672761520.

The previous prime is 5142385697. The next prime is 5142385723. The reversal of 5142385721 is 1275832415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5142385721 - 2²² = 5138191417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5142385723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81281 + ... + 129966.

It is an arithmetic number, because the mean of its divisors is an integer number (701554608).

Almost surely, 2^5142385721 is an apocalyptic number.

It is an amenable number.

5142385721 is a deficient number, since it is larger than the sum of its proper divisors (470051143).

5142385721 is a wasteful number, since it uses less digits than its factorization.

5142385721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213471.

The product of its digits is 67200, while the sum is 38.

The square root of 5142385721 is about 71710.4296528755. The cubic root of 5142385721 is about 1726.0560049222.

The spelling of 5142385721 in words is "five billion, one hundred forty-two million, three hundred eighty-five thousand, seven hundred twenty-one".