420310003 has 2 divisors, whose sum is σ = 420310004. Its totient is φ = 420310002.

The previous prime is 420309991. The next prime is 420310019. The reversal of 420310003 is 300013024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420310003 - 2¹³ = 420301811 is a prime.

It is not a weakly prime, because it can be changed into another prime (420310043) 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, 210155001 + 210155002.

It is an arithmetic number, because the mean of its divisors is an integer number (210155002).

Almost surely, 2^420310003 is an apocalyptic number.

420310003 is a deficient number, since it is larger than the sum of its proper divisors (1).

420310003 is an equidigital number, since it uses as much as digits as its factorization.

420310003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 420310003 is about 20501.4634355697. The cubic root of 420310003 is about 749.0714452262.

Adding to 420310003 its reverse (300013024), we get a palindrome (720323027).

The spelling of 420310003 in words is "four hundred twenty million, three hundred ten thousand, three".