421044452203939 has 2 divisors, whose sum is σ = 421044452203940. Its totient is φ = 421044452203938.

The previous prime is 421044452203829. The next prime is 421044452204017. The reversal of 421044452203939 is 939302254440124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421044452203939 - 2³⁹ = 420494696390051 is a prime.

It is not a weakly prime, because it can be changed into another prime (421044452203439) 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, 210522226101969 + 210522226101970.

It is an arithmetic number, because the mean of its divisors is an integer number (210522226101970).

Almost surely, 2^{421044452203939} is an apocalyptic number.

421044452203939 is a deficient number, since it is larger than the sum of its proper divisors (1).

421044452203939 is an equidigital number, since it uses as much as digits as its factorization.

421044452203939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7464960, while the sum is 52.

The spelling of 421044452203939 in words is "four hundred twenty-one trillion, forty-four billion, four hundred fifty-two million, two hundred three thousand, nine hundred thirty-nine".