123403204 has 12 divisors (see below), whose sum is σ = 228659004. Its totient is φ = 58072064.

The previous prime is 123403201. The next prime is 123403229. The reversal of 123403204 is 402304321.

It can be written as a sum of positive squares in 2 ways, for example, as 103063104 + 20340100 = 10152^2 + 4510^2 .

It is not an unprimeable number, because it can be changed into a prime (123403201) by changing a digit.

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, 907309 + ... + 907444.

It is an arithmetic number, because the mean of its divisors is an integer number (19054917).

Almost surely, 2^123403204 is an apocalyptic number.

It is an amenable number.

123403204 is a deficient number, since it is larger than the sum of its proper divisors (105255800).

123403204 is a wasteful number, since it uses less digits than its factorization.

123403204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814774 (or 1814772 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 123403204 is about 11108.6994738358. The cubic root of 123403204 is about 497.8618079704.

Adding to 123403204 its reverse (402304321), we get a palindrome (525707525).

The spelling of 123403204 in words is "one hundred twenty-three million, four hundred three thousand, two hundred four".