123113312442 has 48 divisors (see below), whose sum is σ = 270794871360. Its totient is φ = 40415101056.

The previous prime is 123113312423. The next prime is 123113312449. The reversal of 123113312442 is 244213311321.

123113312442 is a `hidden beast` number, since 12 + 311 + 331 + 2 + 4 + 4 + 2 = 666.

It is a super-3 number, since 3×123113312442³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (123113312449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5921938 + ... + 5942690.

It is an arithmetic number, because the mean of its divisors is an integer number (5641559820).

Almost surely, 2^123113312442 is an apocalyptic number.

123113312442 is an abundant number, since it is smaller than the sum of its proper divisors (147681558918).

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

123113312442 is a wasteful number, since it uses less digits than its factorization.

123113312442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25747 (or 25744 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 123113312442 its reverse (244213311321), we get a palindrome (367326623763).

The spelling of 123113312442 in words is "one hundred twenty-three billion, one hundred thirteen million, three hundred twelve thousand, four hundred forty-two".