4252743046021 has 2 divisors, whose sum is σ = 4252743046022. Its totient is φ = 4252743046020.

The previous prime is 4252743046007. The next prime is 4252743046099. The reversal of 4252743046021 is 1206403472524.

4252743046021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4088544660225 + 164198385796 = 2022015^2 + 405214^2 .

It is a cyclic number.

It is not a de Polignac number, because 4252743046021 - 2²⁹ = 4252206175109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4252743046421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2126371523010 + 2126371523011.

It is an arithmetic number, because the mean of its divisors is an integer number (2126371523011).

Almost surely, 2^{4252743046021} is an apocalyptic number.

It is an amenable number.

4252743046021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4252743046021 is an equidigital number, since it uses as much as digits as its factorization.

4252743046021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 40.

The spelling of 4252743046021 in words is "four trillion, two hundred fifty-two billion, seven hundred forty-three million, forty-six thousand, twenty-one".