420321203 has 2 divisors, whose sum is σ = 420321204. Its totient is φ = 420321202.

The previous prime is 420321199. The next prime is 420321247. The reversal of 420321203 is 302123024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420321203 - 2² = 420321199 is a prime.

It is not a weakly prime, because it can be changed into another prime (420321263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210160601 + 210160602.

It is an arithmetic number, because the mean of its divisors is an integer number (210160602).

Almost surely, 2^420321203 is an apocalyptic number.

420321203 is a deficient number, since it is larger than the sum of its proper divisors (1).

420321203 is an equidigital number, since it uses as much as digits as its factorization.

420321203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 420321203 is about 20501.7365849823. The cubic root of 420321203 is about 749.0780986690.

Adding to 420321203 its reverse (302123024), we get a palindrome (722444227).

The spelling of 420321203 in words is "four hundred twenty million, three hundred twenty-one thousand, two hundred three".