123223056 has 160 divisors (see below), whose sum is σ = 372833280. Its totient is φ = 34675200.

The previous prime is 123223043. The next prime is 123223057. The reversal of 123223056 is 650322321.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (123223057) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 712186 + ... + 712358.

It is an arithmetic number, because the mean of its divisors is an integer number (2330208).

Almost surely, 2^123223056 is an apocalyptic number.

123223056 is a gapful number since it is divisible by the number (16) 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 123223056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186416640).

123223056 is an abundant number, since it is smaller than the sum of its proper divisors (249610224).

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

123223056 is a wasteful number, since it uses less digits than its factorization.

123223056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 123223056 is about 11100.5880925292. The cubic root of 123223056 is about 497.6194250472.

Adding to 123223056 its reverse (650322321), we get a palindrome (773545377).

The spelling of 123223056 in words is "one hundred twenty-three million, two hundred twenty-three thousand, fifty-six".