420005203252 has 12 divisors (see below), whose sum is σ = 735019082980. Its totient is φ = 209999750976.

The previous prime is 420005203237. The next prime is 420005203279. The reversal of 420005203252 is 252302500024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 215914491556 + 204090711696 = 464666^2 + 451764^2 .

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 361983 + ... + 985414.

Almost surely, 2^420005203252 is an apocalyptic number.

It is an amenable number.

420005203252 is a deficient number, since it is larger than the sum of its proper divisors (315013879728).

420005203252 is a wasteful number, since it uses less digits than its factorization.

420005203252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425330 (or 1425328 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 420005203252 its reverse (252302500024), we get a palindrome (672307703276).

The spelling of 420005203252 in words is "four hundred twenty billion, five million, two hundred three thousand, two hundred fifty-two".