123243404112 has 60 divisors (see below), whose sum is σ = 348259046304. Its totient is φ = 40682283840.

The previous prime is 123243404101. The next prime is 123243404129. The reversal of 123243404112 is 211404342321.

123243404112 is a `hidden beast` number, since 1 + 2 + 3 + 243 + 4 + 0 + 411 + 2 = 666.

It is a super-2 number, since 2×123243404112² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 4139814 + ... + 4169477.

Almost surely, 2^123243404112 is an apocalyptic number.

123243404112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123243404112 is an abundant number, since it is smaller than the sum of its proper divisors (225015642192).

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

123243404112 is a wasteful number, since it uses less digits than its factorization.

123243404112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8309408 (or 8309399 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 123243404112 its reverse (211404342321), we get a palindrome (334647746433).

The spelling of 123243404112 in words is "one hundred twenty-three billion, two hundred forty-three million, four hundred four thousand, one hundred twelve".