420210212 has 12 divisors (see below), whose sum is σ = 747423516. Its totient is φ = 206660640.

The previous prime is 420210187. The next prime is 420210223. The reversal of 420210212 is 212012024.

It can be written as a sum of positive squares in 2 ways, for example, as 210366016 + 209844196 = 14504^2 + 14486^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 860843 + ... + 861330.

It is an arithmetic number, because the mean of its divisors is an integer number (62285293).

Almost surely, 2^420210212 is an apocalyptic number.

It is an amenable number.

420210212 is a deficient number, since it is larger than the sum of its proper divisors (327213304).

420210212 is a wasteful number, since it uses less digits than its factorization.

420210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722238 (or 1722236 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 420210212 is about 20499.0295380050. The cubic root of 420210212 is about 749.0121584262.

Adding to 420210212 its reverse (212012024), we get a palindrome (632222236).

The spelling of 420210212 in words is "four hundred twenty million, two hundred ten thousand, two hundred twelve".