420410252 has 12 divisors (see below), whose sum is σ = 740232696. Its totient is φ = 208915200.

The previous prime is 420410227. The next prime is 420410267. The reversal of 420410252 is 252014024.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321749 + ... + 323052.

It is an arithmetic number, because the mean of its divisors is an integer number (61686058).

Almost surely, 2^420410252 is an apocalyptic number.

It is an amenable number.

420410252 is a deficient number, since it is larger than the sum of its proper divisors (319822444).

420410252 is a wasteful number, since it uses less digits than its factorization.

420410252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644968 (or 644966 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 420410252 is about 20503.9082128262. The cubic root of 420410252 is about 749.1309946804.

Adding to 420410252 its reverse (252014024), we get a palindrome (672424276).

The spelling of 420410252 in words is "four hundred twenty million, four hundred ten thousand, two hundred fifty-two".