123302112 has 48 divisors (see below), whose sum is σ = 325648512. Its totient is φ = 40849280.

The previous prime is 123302111. The next prime is 123302131. The reversal of 123302112 is 211203321.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 123302091 and 123302100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123302111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12187 + ... + 19877.

It is an arithmetic number, because the mean of its divisors is an integer number (6784344).

Almost surely, 2^123302112 is an apocalyptic number.

123302112 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 123302112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162824256).

123302112 is an abundant number, since it is smaller than the sum of its proper divisors (202346400).

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

123302112 is a wasteful number, since it uses less digits than its factorization.

123302112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7871 (or 7863 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123302112 is about 11104.1484139938. The cubic root of 123302112 is about 497.7258212376.

Adding to 123302112 its reverse (211203321), we get a palindrome (334505433).

The spelling of 123302112 in words is "one hundred twenty-three million, three hundred two thousand, one hundred twelve".