123443712 has 240 divisors, whose sum is σ = 421312320. Its totient is φ = 34062336.

The previous prime is 123443707. The next prime is 123443777. The reversal of 123443712 is 217344321.

It is a happy number.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

Its product of digits (4032) is a multiple of the sum of its prime divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1386964 + ... + 1387052.

It is an arithmetic number, because the mean of its divisors is an integer number (1755468).

Almost surely, 2^123443712 is an apocalyptic number.

123443712 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 123443712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210656160).

123443712 is an abundant number, since it is smaller than the sum of its proper divisors (297868608).

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

123443712 is an equidigital number, since it uses as much as digits as its factorization.

123443712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 144 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 123443712 is about 11110.5225799690. The cubic root of 123443712 is about 497.9162775983.

The spelling of 123443712 in words is "one hundred twenty-three million, four hundred forty-three thousand, seven hundred twelve".