4021243421207 has 2 divisors, whose sum is σ = 4021243421208. Its totient is φ = 4021243421206.

The previous prime is 4021243421197. The next prime is 4021243421323. The reversal of 4021243421207 is 7021243421204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4021243421207 - 2¹⁶ = 4021243355671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021243421807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010621710603 + 2010621710604.

It is an arithmetic number, because the mean of its divisors is an integer number (2010621710604).

Almost surely, 2^{4021243421207} is an apocalyptic number.

4021243421207 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021243421207 is an equidigital number, since it uses as much as digits as its factorization.

4021243421207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 32.

The spelling of 4021243421207 in words is "four trillion, twenty-one billion, two hundred forty-three million, four hundred twenty-one thousand, two hundred seven".