123004406 has 12 divisors (see below), whose sum is σ = 214630308. Its totient is φ = 52716132.

The previous prime is 123004403. The next prime is 123004433. The reversal of 123004406 is 604400321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123004403) 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 5 ways as a sum of consecutive naturals, for example, 627476 + ... + 627671.

It is an arithmetic number, because the mean of its divisors is an integer number (17885859).

Almost surely, 2^123004406 is an apocalyptic number.

123004406 is a deficient number, since it is larger than the sum of its proper divisors (91625902).

123004406 is a wasteful number, since it uses less digits than its factorization.

123004406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255163 (or 1255156 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 123004406 is about 11090.7351424511. The cubic root of 123004406 is about 497.3249214333.

Adding to 123004406 its reverse (604400321), we get a palindrome (727404727).

The spelling of 123004406 in words is "one hundred twenty-three million, four thousand, four hundred six".