12742222 has 4 divisors (see below), whose sum is σ = 19113336. Its totient is φ = 6371110.

The previous prime is 12742193. The next prime is 12742237. The reversal of 12742222 is 22224721.

It is a happy number.

12742222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

12742222 is a modest number, since divided by 2222 gives 1274 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 12742193 and 12742202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3185554 + ... + 3185557.

It is an arithmetic number, because the mean of its divisors is an integer number (4778334).

Almost surely, 2^12742222 is an apocalyptic number.

12742222 is a deficient number, since it is larger than the sum of its proper divisors (6371114).

12742222 is an equidigital number, since it uses as much as digits as its factorization.

12742222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6371113.

The product of its digits is 896, while the sum is 22.

The square root of 12742222 is about 3569.6249102672. The cubic root of 12742222 is about 233.5689216920.

Adding to 12742222 its reverse (22224721), we get a palindrome (34966943).

The spelling of 12742222 in words is "twelve million, seven hundred forty-two thousand, two hundred twenty-two".