123118436 has 12 divisors (see below), whose sum is σ = 246236928. Its totient is φ = 52765032.

The previous prime is 123118433. The next prime is 123118451. The reversal of 123118436 is 634811321.

123118436 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 123118399 and 123118408.

It is not an unprimeable number, because it can be changed into a prime (123118433) 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, 2198516 + ... + 2198571.

It is an arithmetic number, because the mean of its divisors is an integer number (20519744).

Almost surely, 2^123118436 is an apocalyptic number.

It is an amenable number.

123118436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

123118436 is a wasteful number, since it uses less digits than its factorization.

123118436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4397098 (or 4397096 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 123118436 is about 11095.8747289252. The cubic root of 123118436 is about 497.4785539942.

Adding to 123118436 its reverse (634811321), we get a palindrome (757929757).

The spelling of 123118436 in words is "one hundred twenty-three million, one hundred eighteen thousand, four hundred thirty-six".