1242440113111 has 2 divisors, whose sum is σ = 1242440113112. Its totient is φ = 1242440113110.

The previous prime is 1242440113099. The next prime is 1242440113151. The reversal of 1242440113111 is 1113110442421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242440113111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242440113151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621220056555 + 621220056556.

It is an arithmetic number, because the mean of its divisors is an integer number (621220056556).

Almost surely, 2^{1242440113111} is an apocalyptic number.

1242440113111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242440113111 is an equidigital number, since it uses as much as digits as its factorization.

1242440113111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 1242440113111 its reverse (1113110442421), we get a palindrome (2355550555532).

The spelling of 1242440113111 in words is "one trillion, two hundred forty-two billion, four hundred forty million, one hundred thirteen thousand, one hundred eleven".