123304 has 8 divisors (see below), whose sum is σ = 231210. Its totient is φ = 61648.

The previous prime is 123289. The next prime is 123307. The reversal of 123304 is 403321.

It can be written as a sum of positive squares in only one way, i.e., 84100 + 39204 = 290^2 + 198^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (123307) by changing a digit.

123304 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7699 + ... + 7714.

2¹²³³⁰⁴ is an apocalyptic number.

It is an amenable number.

123304 is a deficient number, since it is larger than the sum of its proper divisors (107906).

123304 is a wasteful number, since it uses less digits than its factorization.

123304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15419 (or 15415 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 123304 is about 351.1466929931. The cubic root of 123304 is about 49.7728361615.

Adding to 123304 its reverse (403321), we get a palindrome (526625).

The spelling of 123304 in words is "one hundred twenty-three thousand, three hundred four", and thus it is an iban number.