420303101 has 2 divisors, whose sum is σ = 420303102. Its totient is φ = 420303100.

The previous prime is 420303097. The next prime is 420303109. The reversal of 420303101 is 101303024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420291001 + 12100 = 20501^2 + 110^2 .

It is a cyclic number.

It is not a de Polignac number, because 420303101 - 2² = 420303097 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420303109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210151550 + 210151551.

It is an arithmetic number, because the mean of its divisors is an integer number (210151551).

Almost surely, 2^420303101 is an apocalyptic number.

It is an amenable number.

420303101 is a deficient number, since it is larger than the sum of its proper divisors (1).

420303101 is an equidigital number, since it uses as much as digits as its factorization.

420303101 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 14.

The square root of 420303101 is about 20501.2951054318. The cubic root of 420303101 is about 749.0673449832.

Adding to 420303101 its reverse (101303024), we get a palindrome (521606125).

The spelling of 420303101 in words is "four hundred twenty million, three hundred three thousand, one hundred one".