1240142310111 has 4 divisors (see below), whose sum is σ = 1653523080152. Its totient is φ = 826761540072.

The previous prime is 1240142310073. The next prime is 1240142310137. The reversal of 1240142310111 is 1110132410421.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1240142310111 - 2¹¹ = 1240142308063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240142310161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206690385016 + ... + 206690385021.

It is an arithmetic number, because the mean of its divisors is an integer number (413380770038).

Almost surely, 2^{1240142310111} is an apocalyptic number.

1240142310111 is a deficient number, since it is larger than the sum of its proper divisors (413380770041).

1240142310111 is an equidigital number, since it uses as much as digits as its factorization.

1240142310111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413380770040.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 1240142310111 its reverse (1110132410421), we get a palindrome (2350274720532).

The spelling of 1240142310111 in words is "one trillion, two hundred forty billion, one hundred forty-two million, three hundred ten thousand, one hundred eleven".