123442123 has 12 divisors (see below), whose sum is σ = 143777712. Its totient is φ = 105673680.

The previous prime is 123442097. The next prime is 123442129. The reversal of 123442123 is 321244321.

It is not a de Polignac number, because 123442123 - 2¹³ = 123433931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123442094 and 123442103.

It is not an unprimeable number, because it can be changed into a prime (123442129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70033 + ... + 71773.

It is an arithmetic number, because the mean of its divisors is an integer number (11981476).

Almost surely, 2^123442123 is an apocalyptic number.

123442123 is a deficient number, since it is larger than the sum of its proper divisors (20335589).

123442123 is a wasteful number, since it uses less digits than its factorization.

123442123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3202 (or 3195 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 123442123 is about 11110.4510709512. The cubic root of 123442123 is about 497.9141411526.

Adding to 123442123 its reverse (321244321), we get a palindrome (444686444).

The spelling of 123442123 in words is "one hundred twenty-three million, four hundred forty-two thousand, one hundred twenty-three".