123422442 has 128 divisors (see below), whose sum is σ = 312560640. Its totient is φ = 31933440.

The previous prime is 123422437. The next prime is 123422449. The reversal of 123422442 is 244224321.

It is not an unprimeable number, because it can be changed into a prime (123422449) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1092178 + ... + 1092290.

It is an arithmetic number, because the mean of its divisors is an integer number (2441880).

Almost surely, 2^123422442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123422442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156280320).

123422442 is an abundant number, since it is smaller than the sum of its proper divisors (189138198).

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

123422442 is a wasteful number, since it uses less digits than its factorization.

123422442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228.

The product of its digits is 3072, while the sum is 24.

The square root of 123422442 is about 11109.5653380319. The cubic root of 123422442 is about 497.8876780923.

Adding to 123422442 its reverse (244224321), we get a palindrome (367646763).

The spelling of 123422442 in words is "one hundred twenty-three million, four hundred twenty-two thousand, four hundred forty-two".