421034705803 has 2 divisors, whose sum is σ = 421034705804. Its totient is φ = 421034705802.

The previous prime is 421034705677. The next prime is 421034705827. The reversal of 421034705803 is 308507430124.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421034705803 - 2¹⁷ = 421034574731 is a prime.

It is not a weakly prime, because it can be changed into another prime (421034705863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210517352901 + 210517352902.

It is an arithmetic number, because the mean of its divisors is an integer number (210517352902).

Almost surely, 2^421034705803 is an apocalyptic number.

421034705803 is a deficient number, since it is larger than the sum of its proper divisors (1).

421034705803 is an equidigital number, since it uses as much as digits as its factorization.

421034705803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 421034705803 in words is "four hundred twenty-one billion, thirty-four million, seven hundred five thousand, eight hundred three".