52142320421 has 12 divisors (see below), whose sum is σ = 54096426852. Its totient is φ = 50256589824.

The previous prime is 52142320403. The next prime is 52142320459. The reversal of 52142320421 is 12402324125.

52142320421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 790228321 + 51352092100 = 28111^2 + 226610^2 .

It is not a de Polignac number, because 52142320421 - 2¹⁴ = 52142304037 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 (52142320481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 431531 + ... + 538983.

It is an arithmetic number, because the mean of its divisors is an integer number (4508035571).

Almost surely, 2^52142320421 is an apocalyptic number.

It is an amenable number.

52142320421 is a deficient number, since it is larger than the sum of its proper divisors (1954106431).

52142320421 is a wasteful number, since it uses less digits than its factorization.

52142320421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108088 (or 108059 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 52142320421 its reverse (12402324125), we get a palindrome (64544644546).

The spelling of 52142320421 in words is "fifty-two billion, one hundred forty-two million, three hundred twenty thousand, four hundred twenty-one".