1242204243 has 12 divisors (see below), whose sum is σ = 1926684360. Its totient is φ = 709830912.

The previous prime is 1242204181. The next prime is 1242204247. The reversal of 1242204243 is 3424022421.

It is not a de Polignac number, because 1242204243 - 2⁶ = 1242204179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242204247) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 4225038 + ... + 4225331.

It is an arithmetic number, because the mean of its divisors is an integer number (160557030).

Almost surely, 2^1242204243 is an apocalyptic number.

1242204243 is a deficient number, since it is larger than the sum of its proper divisors (684480117).

1242204243 is an equidigital number, since it uses as much as digits as its factorization.

1242204243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8450386 (or 8450379 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1242204243 is about 35244.9179740853. The cubic root of 1242204243 is about 1074.9732801724.

Adding to 1242204243 its reverse (3424022421), we get a palindrome (4666226664).

The spelling of 1242204243 in words is "one billion, two hundred forty-two million, two hundred four thousand, two hundred forty-three".