1223040123 has 12 divisors (see below), whose sum is σ = 1771539120. Its totient is φ = 813086736.

The previous prime is 1223040121. The next prime is 1223040139. The reversal of 1223040123 is 3210403221.

1223040123 is a `hidden beast` number, since 12 + 230 + 401 + 23 = 666.

1223040123 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1223040123 - 2¹ = 1223040121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223040096 and 1223040105.

It is not an unprimeable number, because it can be changed into a prime (1223040121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186036 + ... + 192497.

It is an arithmetic number, because the mean of its divisors is an integer number (147628260).

Almost surely, 2^1223040123 is an apocalyptic number.

1223040123 is a deficient number, since it is larger than the sum of its proper divisors (548498997).

1223040123 is a wasteful number, since it uses less digits than its factorization.

1223040123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378898 (or 378895 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1223040123 is about 34971.9905495812. The cubic root of 1223040123 is about 1069.4165518027.

Adding to 1223040123 its reverse (3210403221), we get a palindrome (4433443344).

The spelling of 1223040123 in words is "one billion, two hundred twenty-three million, forty thousand, one hundred twenty-three".