5242740521 has 2 divisors, whose sum is σ = 5242740522. Its totient is φ = 5242740520.

The previous prime is 5242740511. The next prime is 5242740539. The reversal of 5242740521 is 1250472425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4184149225 + 1058591296 = 64685^2 + 32536^2 .

It is a cyclic number.

It is not a de Polignac number, because 5242740521 - 2⁶ = 5242740457 is a prime.

It is not a weakly prime, because it can be changed into another prime (5242740511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2621370260 + 2621370261.

It is an arithmetic number, because the mean of its divisors is an integer number (2621370261).

Almost surely, 2^5242740521 is an apocalyptic number.

It is an amenable number.

5242740521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5242740521 is an equidigital number, since it uses as much as digits as its factorization.

5242740521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 5242740521 is about 72406.7712372261. The cubic root of 5242740521 is about 1737.2118690376.

The spelling of 5242740521 in words is "five billion, two hundred forty-two million, seven hundred forty thousand, five hundred twenty-one".