420502311 has 6 divisors (see below), whose sum is σ = 607392240. Its totient is φ = 280334868.

The previous prime is 420502297. The next prime is 420502331. The reversal of 420502311 is 113205024.

It is not a de Polignac number, because 420502311 - 2⁹ = 420501799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420502331) 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 in 5 ways as a sum of consecutive naturals, for example, 23361231 + ... + 23361248.

It is an arithmetic number, because the mean of its divisors is an integer number (101232040).

Almost surely, 2^420502311 is an apocalyptic number.

420502311 is a deficient number, since it is larger than the sum of its proper divisors (186889929).

420502311 is a wasteful number, since it uses less digits than its factorization.

420502311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46722485 (or 46722482 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 420502311 is about 20506.1530034280. The cubic root of 420502311 is about 749.1856708106.

Adding to 420502311 its reverse (113205024), we get a palindrome (533707335).

The spelling of 420502311 in words is "four hundred twenty million, five hundred two thousand, three hundred eleven".