1131242140342 has 16 divisors (see below), whose sum is σ = 1786213128240. Its totient is φ = 535839141888.

The previous prime is 1131242140297. The next prime is 1131242140363. The reversal of 1131242140342 is 2430412421311.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131242140342.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1439578 + ... + 2082034.

It is an arithmetic number, because the mean of its divisors is an integer number (111638320515).

Almost surely, 2^{1131242140342} is an apocalyptic number.

1131242140342 is a deficient number, since it is larger than the sum of its proper divisors (654970987898).

1131242140342 is a wasteful number, since it uses less digits than its factorization.

1131242140342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688815.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1131242140342 its reverse (2430412421311), we get a palindrome (3561654561653).

The spelling of 1131242140342 in words is "one trillion, one hundred thirty-one billion, two hundred forty-two million, one hundred forty thousand, three hundred forty-two".