123440222 has 4 divisors (see below), whose sum is σ = 185160336. Its totient is φ = 61720110.

The previous prime is 123440167. The next prime is 123440227. The reversal of 123440222 is 222044321.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 123440194 and 123440203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123440227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30860054 + ... + 30860057.

It is an arithmetic number, because the mean of its divisors is an integer number (46290084).

Almost surely, 2^123440222 is an apocalyptic number.

123440222 is a deficient number, since it is larger than the sum of its proper divisors (61720114).

123440222 is an equidigital number, since it uses as much as digits as its factorization.

123440222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61720113.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 123440222 is about 11110.3655205398. The cubic root of 123440222 is about 497.9115851919.

Adding to 123440222 its reverse (222044321), we get a palindrome (345484543).

The spelling of 123440222 in words is "one hundred twenty-three million, four hundred forty thousand, two hundred twenty-two".