123124520112 has 160 divisors (see below), whose sum is σ = 349164152064. Its totient is φ = 37077196800.

The previous prime is 123124520087. The next prime is 123124520137. The reversal of 123124520112 is 211025421321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123124520087) and next prime (123124520137).

It is a Harshad number since it is a multiple of its sum of digits (24).

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 31 ways as a sum of consecutive naturals, for example, 69286968 + ... + 69288744.

Almost surely, 2^123124520112 is an apocalyptic number.

123124520112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123124520112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174582076032).

123124520112 is an abundant number, since it is smaller than the sum of its proper divisors (226039631952).

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

123124520112 is a wasteful number, since it uses less digits than its factorization.

123124520112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547 (or 2541 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 123124520112 its reverse (211025421321), we get a palindrome (334149941433).

The spelling of 123124520112 in words is "one hundred twenty-three billion, one hundred twenty-four million, five hundred twenty thousand, one hundred twelve".