123304005 has 64 divisors (see below), whose sum is σ = 244823040. Its totient is φ = 58363200.

The previous prime is 123304003. The next prime is 123304037. The reversal of 123304005 is 500403321.

It is not a de Polignac number, because 123304005 - 2¹ = 123304003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123304003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62890 + ... + 64820.

It is an arithmetic number, because the mean of its divisors is an integer number (3825360).

Almost surely, 2^123304005 is an apocalyptic number.

123304005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123304005 is a deficient number, since it is larger than the sum of its proper divisors (121519035).

123304005 is a wasteful number, since it uses less digits than its factorization.

123304005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999 (or 1993 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 123304005 is about 11104.2336520806. The cubic root of 123304005 is about 497.7283683423.

Adding to 123304005 its reverse (500403321), we get a palindrome (623707326).

The spelling of 123304005 in words is "one hundred twenty-three million, three hundred four thousand, five".