1131230142242 has 8 divisors (see below), whose sum is σ = 1705458641436. Its totient is φ = 562743928432.

The previous prime is 1131230142209. The next prime is 1131230142277. The reversal of 1131230142242 is 2422410321311.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 943386780961 + 187843361281 = 971281^2 + 433409^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1435570853 + ... + 1435571640.

Almost surely, 2^{1131230142242} is an apocalyptic number.

1131230142242 is a deficient number, since it is larger than the sum of its proper divisors (574228499194).

1131230142242 is a wasteful number, since it uses less digits than its factorization.

1131230142242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871142692.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 1131230142242 its reverse (2422410321311), we get a palindrome (3553640463553).

The spelling of 1131230142242 in words is "one trillion, one hundred thirty-one billion, two hundred thirty million, one hundred forty-two thousand, two hundred forty-two".