123450304172 has 24 divisors (see below), whose sum is σ = 232695827952. Its totient is φ = 56967393600.

The previous prime is 123450304169. The next prime is 123450304181. The reversal of 123450304172 is 271403054321.

123450304172 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112547 + ... + 509477.

It is an arithmetic number, because the mean of its divisors is an integer number (9695659498).

Almost surely, 2^123450304172 is an apocalyptic number.

It is an amenable number.

123450304172 is a deficient number, since it is larger than the sum of its proper divisors (109245523780).

123450304172 is a wasteful number, since it uses less digits than its factorization.

123450304172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402929 (or 402927 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

Adding to 123450304172 its reverse (271403054321), we get a palindrome (394853358493).

The spelling of 123450304172 in words is "one hundred twenty-three billion, four hundred fifty million, three hundred four thousand, one hundred seventy-two".