123121204 has 24 divisors (see below), whose sum is σ = 218877120. Its totient is φ = 60590784.

The previous prime is 123121189. The next prime is 123121217. The reversal of 123121204 is 402121321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118672 + ... + 119704.

It is an arithmetic number, because the mean of its divisors is an integer number (9119880).

Almost surely, 2^123121204 is an apocalyptic number.

It is an amenable number.

123121204 is a deficient number, since it is larger than the sum of its proper divisors (95755916).

123121204 is a wasteful number, since it uses less digits than its factorization.

123121204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479 (or 1477 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 123121204 is about 11095.9994592646. Note that the first 3 decimals coincide. The cubic root of 123121204 is about 497.4822821396.

Adding to 123121204 its reverse (402121321), we get a palindrome (525242525).

The spelling of 123121204 in words is "one hundred twenty-three million, one hundred twenty-one thousand, two hundred four".