1224421442 has 4 divisors (see below), whose sum is σ = 1836632166. Its totient is φ = 612210720.

The previous prime is 1224421439. The next prime is 1224421453. The reversal of 1224421442 is 2441244221.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1165607881 + 58813561 = 34141^2 + 7669^2 .

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 as a sum of consecutive naturals, namely, 306105359 + ... + 306105362.

Almost surely, 2^1224421442 is an apocalyptic number.

1224421442 is a deficient number, since it is larger than the sum of its proper divisors (612210724).

1224421442 is an equidigital number, since it uses as much as digits as its factorization.

1224421442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612210723.

The product of its digits is 4096, while the sum is 26.

The square root of 1224421442 is about 34991.7339095964. The cubic root of 1224421442 is about 1069.8190051093.

Adding to 1224421442 its reverse (2441244221), we get a palindrome (3665665663).

The spelling of 1224421442 in words is "one billion, two hundred twenty-four million, four hundred twenty-one thousand, four hundred forty-two".