210243412 has 6 divisors (see below), whose sum is σ = 367925978. Its totient is φ = 105121704.

The previous prime is 210243409. The next prime is 210243413. The reversal of 210243412 is 214342012.

It can be written as a sum of positive squares in only one way, i.e., 169104016 + 41139396 = 13004^2 + 6414^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 210243412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210243413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26280423 + ... + 26280430.

Almost surely, 2^210243412 is an apocalyptic number.

It is an amenable number.

210243412 is a deficient number, since it is larger than the sum of its proper divisors (157682566).

210243412 is a wasteful number, since it uses less digits than its factorization.

210243412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52560857 (or 52560855 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 210243412 is about 14499.7728258066. The cubic root of 210243412 is about 594.6217608769.

Adding to 210243412 its reverse (214342012), we get a palindrome (424585424).

The spelling of 210243412 in words is "two hundred ten million, two hundred forty-three thousand, four hundred twelve".