420324013 has 2 divisors, whose sum is σ = 420324014. Its totient is φ = 420324012.

The previous prime is 420323993. The next prime is 420324043. The reversal of 420324013 is 310423024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 332770564 + 87553449 = 18242^2 + 9357^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420324013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420324043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210162006 + 210162007.

It is an arithmetic number, because the mean of its divisors is an integer number (210162007).

Almost surely, 2^420324013 is an apocalyptic number.

It is an amenable number.

420324013 is a deficient number, since it is larger than the sum of its proper divisors (1).

420324013 is an equidigital number, since it uses as much as digits as its factorization.

420324013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 420324013 is about 20501.8051156477. The cubic root of 420324013 is about 749.0797679517.

Adding to 420324013 its reverse (310423024), we get a palindrome (730747037).

The spelling of 420324013 in words is "four hundred twenty million, three hundred twenty-four thousand, thirteen".