123423222 has 64 divisors (see below), whose sum is σ = 274627584. Its totient is φ = 36741120.

The previous prime is 123423197. The next prime is 123423227. The reversal of 123423222 is 222324321.

It is a super-2 number, since 2×123423222² = 30466583457722568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123423227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 480118 + ... + 480374.

It is an arithmetic number, because the mean of its divisors is an integer number (4291056).

Almost surely, 2^123423222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123423222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137313792).

123423222 is an abundant number, since it is smaller than the sum of its proper divisors (151204362).

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

123423222 is a wasteful number, since it uses less digits than its factorization.

123423222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453.

The product of its digits is 1152, while the sum is 21.

The square root of 123423222 is about 11109.6004428602. The cubic root of 123423222 is about 497.8887269333. Note that the first 3 decimals are identical.

Adding to 123423222 its reverse (222324321), we get a palindrome (345747543).

The spelling of 123423222 in words is "one hundred twenty-three million, four hundred twenty-three thousand, two hundred twenty-two".