1243222 has 4 divisors (see below), whose sum is σ = 1864836. Its totient is φ = 621610.

The previous prime is 1243211. The next prime is 1243271. The reversal of 1243222 is 2223421.

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 = 1243196 and 1243205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310804 + ... + 310807.

It is an arithmetic number, because the mean of its divisors is an integer number (466209).

2^1243222 is an apocalyptic number.

1243222 is a deficient number, since it is larger than the sum of its proper divisors (621614).

1243222 is an equidigital number, since it uses as much as digits as its factorization.

1243222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621613.

The product of its digits is 192, while the sum is 16.

The square root of 1243222 is about 1114.9986547077. The cubic root of 1243222 is about 107.5266780732.

Adding to 1243222 its reverse (2223421), we get a palindrome (3466643).

It can be divided in two parts, 12 and 43222, that added together give a palindrome (43234).

The spelling of 1243222 in words is "one million, two hundred forty-three thousand, two hundred twenty-two".