421127803 has 2 divisors, whose sum is σ = 421127804. Its totient is φ = 421127802.

The previous prime is 421127801. The next prime is 421127827. The reversal of 421127803 is 308721124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421127803 - 2¹ = 421127801 is a prime.

Together with 421127801, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (421127801) 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, 210563901 + 210563902.

It is an arithmetic number, because the mean of its divisors is an integer number (210563902).

Almost surely, 2^421127803 is an apocalyptic number.

421127803 is a deficient number, since it is larger than the sum of its proper divisors (1).

421127803 is an equidigital number, since it uses as much as digits as its factorization.

421127803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 421127803 is about 20521.3986609100. The cubic root of 421127803 is about 749.5569549255.

Adding to 421127803 its reverse (308721124), we get a palindrome (729848927).

The spelling of 421127803 in words is "four hundred twenty-one million, one hundred twenty-seven thousand, eight hundred three".