123326720 has 144 divisors (see below), whose sum is σ = 339958080. Its totient is φ = 42393600.

The previous prime is 123326719. The next prime is 123326743. The reversal of 123326720 is 27623321.

It is a self number, because there is not a number n which added to its sum of digits gives 123326720.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267290 + ... + 267750.

It is an arithmetic number, because the mean of its divisors is an integer number (2360820).

Almost surely, 2^123326720 is an apocalyptic number.

123326720 is a gapful number since it is divisible by the number (10) 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 123326720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169979040).

123326720 is an abundant number, since it is smaller than the sum of its proper divisors (216631360).

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

123326720 is a wasteful number, since it uses less digits than its factorization.

123326720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 123326720 is about 11105.2564130685. The cubic root of 123326720 is about 497.7589302199.

The spelling of 123326720 in words is "one hundred twenty-three million, three hundred twenty-six thousand, seven hundred twenty".