123112 has 16 divisors (see below), whose sum is σ = 252000. Its totient is φ = 55920.

The previous prime is 123091. The next prime is 123113. The reversal of 123112 is 211321.

It is not an unprimeable number, because it can be changed into a prime (123113) 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, 612 + ... + 787.

It is an arithmetic number, because the mean of its divisors is an integer number (15750).

2¹²³¹¹² is an apocalyptic number.

It is an amenable number.

123112 is an abundant number, since it is smaller than the sum of its proper divisors (128888).

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

123112 is a wasteful number, since it uses less digits than its factorization.

123112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416 (or 1412 counting only the distinct ones).

The product of its digits is 12, while the sum is 10.

The square root of 123112 is about 350.8731964685. The cubic root of 123112 is about 49.7469885301.

Adding to 123112 its reverse (211321), we get a palindrome (334433).

Subtracting 123112 from its reverse (211321), we obtain a square (88209 = 297²).

The spelling of 123112 in words is "one hundred twenty-three thousand, one hundred twelve", and thus it is an iban number.