123500042 has 16 divisors (see below), whose sum is σ = 191344032.
Its totient is φ = 59745840.
The previous prime is 123500011. The next prime is 123500059. The reversal of 123500042 is 240005321.
Adding to 123500042 its reverse (240005321), we get a palindrome (363505363).
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, 2492 + ... + 15912.
It is an arithmetic number, because the mean of its divisors is an integer number (11959002).
Almost surely, 2123500042 is an apocalyptic number.
123500042 is a deficient number, since it is larger than the sum of its proper divisors (67843990).
123500042 is a wasteful number, since it uses less digits than its factorization.
123500042 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13573.
The product of its (nonzero) digits is 240, while the sum is 17.
The square root of 123500042 is about 11113.0572751156.
The cubic root of 123500042 is about 497.9920026887.
The spelling of 123500042 in words is "one hundred twenty-three million, five hundred thousand, forty-two".