123285612 has 96 divisors (see below), whose sum is σ = 316270080. Its totient is φ = 37255680.

The previous prime is 123285593. The next prime is 123285689. The reversal of 123285612 is 216582321.

It is a self number, because there is not a number n which added to its sum of digits gives 123285612.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 584187 + ... + 584397.

It is an arithmetic number, because the mean of its divisors is an integer number (3294480).

Almost surely, 2^123285612 is an apocalyptic number.

123285612 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 123285612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158135040).

123285612 is an abundant number, since it is smaller than the sum of its proper divisors (192984468).

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

123285612 is a wasteful number, since it uses less digits than its factorization.

123285612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 341 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 123285612 is about 11103.4054235626. The cubic root of 123285612 is about 497.7036187458.

The spelling of 123285612 in words is "one hundred twenty-three million, two hundred eighty-five thousand, six hundred twelve".