123004405 has 16 divisors (see below), whose sum is σ = 151165440. Its totient is φ = 96042112.

The previous prime is 123004403. The next prime is 123004433. The reversal of 123004405 is 504400321.

It is a cyclic number.

It is not a de Polignac number, because 123004405 - 2¹ = 123004403 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 151641 + ... + 152449.

It is an arithmetic number, because the mean of its divisors is an integer number (9447840).

Almost surely, 2^123004405 is an apocalyptic number.

It is an amenable number.

123004405 is a deficient number, since it is larger than the sum of its proper divisors (28161035).

123004405 is an equidigital number, since it uses as much as digits as its factorization.

123004405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 123004405 is about 11090.7350973684. The cubic root of 123004405 is about 497.3249200856.

Adding to 123004405 its reverse (504400321), we get a palindrome (627404726).

The spelling of 123004405 in words is "one hundred twenty-three million, four thousand, four hundred five".