123204212 has 12 divisors (see below), whose sum is σ = 215793060. Its totient is φ = 61549056.

The previous prime is 123204203. The next prime is 123204251. The reversal of 123204212 is 212402321.

It can be written as a sum of positive squares in 2 ways, for example, as 57820816 + 65383396 = 7604^2 + 8086^2 .

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, 7787 + ... + 17522.

It is an arithmetic number, because the mean of its divisors is an integer number (17982755).

Almost surely, 2^123204212 is an apocalyptic number.

It is an amenable number.

123204212 is a deficient number, since it is larger than the sum of its proper divisors (92588848).

123204212 is a wasteful number, since it uses less digits than its factorization.

123204212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26530 (or 26528 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 123204212 is about 11099.7392762173. The cubic root of 123204212 is about 497.5940574501.

Adding to 123204212 its reverse (212402321), we get a palindrome (335606533).

The spelling of 123204212 in words is "one hundred twenty-three million, two hundred four thousand, two hundred twelve".