1242211241 has 4 divisors (see below), whose sum is σ = 1307590800. Its totient is φ = 1176831684.

The previous prime is 1242211231. The next prime is 1242211253. The reversal of 1242211241 is 1421122421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1421122421 = 4493 ⋅316297.

It is a cyclic number.

It is not a de Polignac number, because 1242211241 - 2⁶ = 1242211177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242211231) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 32689751 + ... + 32689788.

It is an arithmetic number, because the mean of its divisors is an integer number (326897700).

Almost surely, 2^1242211241 is an apocalyptic number.

It is an amenable number.

1242211241 is a deficient number, since it is larger than the sum of its proper divisors (65379559).

1242211241 is an equidigital number, since it uses as much as digits as its factorization.

1242211241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65379558.

The product of its digits is 256, while the sum is 20.

The square root of 1242211241 is about 35245.0172506696. The cubic root of 1242211241 is about 1074.9752988015.

Adding to 1242211241 its reverse (1421122421), we get a palindrome (2663333662).

The spelling of 1242211241 in words is "one billion, two hundred forty-two million, two hundred eleven thousand, two hundred forty-one".