421413203 has 2 divisors, whose sum is σ = 421413204. Its totient is φ = 421413202.

The previous prime is 421413197. The next prime is 421413241. The reversal of 421413203 is 302314124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421413203 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (421413253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210706601 + 210706602.

It is an arithmetic number, because the mean of its divisors is an integer number (210706602).

Almost surely, 2^421413203 is an apocalyptic number.

421413203 is a deficient number, since it is larger than the sum of its proper divisors (1).

421413203 is an equidigital number, since it uses as much as digits as its factorization.

421413203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 421413203 is about 20528.3512002304. The cubic root of 421413203 is about 749.7262426065.

Adding to 421413203 its reverse (302314124), we get a palindrome (723727327).

The spelling of 421413203 in words is "four hundred twenty-one million, four hundred thirteen thousand, two hundred three".