12442122 has 96 divisors (see below), whose sum is σ = 34504704. Its totient is φ = 3146400.

The previous prime is 12442117. The next prime is 12442139. The reversal of 12442122 is 22124421.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12442095 and 12442104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65047 + ... + 65237.

It is an arithmetic number, because the mean of its divisors is an integer number (359424).

Almost surely, 2^12442122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12442122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17252352).

12442122 is an abundant number, since it is smaller than the sum of its proper divisors (22062582).

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

12442122 is a wasteful number, since it uses less digits than its factorization.

12442122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 261 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 12442122 is about 3527.3392238343. The cubic root of 12442122 is about 231.7206929073.

Adding to 12442122 its reverse (22124421), we get a palindrome (34566543).

The spelling of 12442122 in words is "twelve million, four hundred forty-two thousand, one hundred twenty-two".