173400123 has 16 divisors (see below), whose sum is σ = 254777600. Its totient is φ = 104225184.

The previous prime is 173400113. The next prime is 173400131. The reversal of 173400123 is 321004371.

173400123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 173400123 - 2⁴ = 173400107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 173400123.

It is not an unprimeable number, because it can be changed into a prime (173400103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50023 + ... + 53376.

It is an arithmetic number, because the mean of its divisors is an integer number (15923600).

Almost surely, 2^173400123 is an apocalyptic number.

173400123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

173400123 is a deficient number, since it is larger than the sum of its proper divisors (81377477).

173400123 is a wasteful number, since it uses less digits than its factorization.

173400123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103458.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 173400123 is about 13168.1480474667. The cubic root of 173400123 is about 557.6347122964.

Adding to 173400123 its reverse (321004371), we get a palindrome (494404494).

The spelling of 173400123 in words is "one hundred seventy-three million, four hundred thousand, one hundred twenty-three".