1244522242 has 4 divisors (see below), whose sum is σ = 1866783366. Its totient is φ = 622261120.

The previous prime is 1244522221. The next prime is 1244522261. The reversal of 1244522242 is 2422254421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2422254421 = 4021 ⋅602401.

It can be written as a sum of positive squares in only one way, i.e., 999255321 + 245266921 = 31611^2 + 15661^2 .

It is a super-2 number, since 2×1244522242² = 3097671221665413128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1244522242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311130559 + ... + 311130562.

Almost surely, 2^1244522242 is an apocalyptic number.

1244522242 is a deficient number, since it is larger than the sum of its proper divisors (622261124).

1244522242 is an equidigital number, since it uses as much as digits as its factorization.

1244522242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622261123.

The product of its digits is 10240, while the sum is 28.

The square root of 1244522242 is about 35277.7868069980. The cubic root of 1244522242 is about 1075.6415113120.

Adding to 1244522242 its reverse (2422254421), we get a palindrome (3666776663).

The spelling of 1244522242 in words is "one billion, two hundred forty-four million, five hundred twenty-two thousand, two hundred forty-two".