1242260011 has 2 divisors, whose sum is σ = 1242260012. Its totient is φ = 1242260010.

The previous prime is 1242259973. The next prime is 1242260027. The reversal of 1242260011 is 1100622421.

It is a strong prime.

It is an emirp because it is prime and its reverse (1100622421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1242260011 - 2¹¹ = 1242257963 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242260051) 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 as a sum of consecutive naturals, namely, 621130005 + 621130006.

It is an arithmetic number, because the mean of its divisors is an integer number (621130006).

Almost surely, 2^1242260011 is an apocalyptic number.

1242260011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242260011 is an equidigital number, since it uses as much as digits as its factorization.

1242260011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1242260011 is about 35245.7091147277. The cubic root of 1242260011 is about 1074.9893666877.

Adding to 1242260011 its reverse (1100622421), we get a palindrome (2342882432).

The spelling of 1242260011 in words is "one billion, two hundred forty-two million, two hundred sixty thousand, eleven".