123018036 has 12 divisors (see below), whose sum is σ = 287042112. Its totient is φ = 41006008.

The previous prime is 123017977. The next prime is 123018037. The reversal of 123018036 is 630810321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 123017997 and 123018015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123018037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5125740 + ... + 5125763.

It is an arithmetic number, because the mean of its divisors is an integer number (23920176).

Almost surely, 2^123018036 is an apocalyptic number.

It is an amenable number.

123018036 is an abundant number, since it is smaller than the sum of its proper divisors (164024076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123018036 is a wasteful number, since it uses less digits than its factorization.

123018036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10251510 (or 10251508 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 123018036 is about 11091.3496022801. The cubic root of 123018036 is about 497.3432901204.

Adding to 123018036 its reverse (630810321), we get a palindrome (753828357).

The spelling of 123018036 in words is "one hundred twenty-three million, eighteen thousand, thirty-six".