1242340132042 has 8 divisors (see below), whose sum is σ = 1927769170500. Its totient is φ = 599750408544.

The previous prime is 1242340132031. The next prime is 1242340132051. The reversal of 1242340132042 is 2402310432421.

It can be written as a sum of positive squares in 2 ways, for example, as 1204025592961 + 38314539081 = 1097281^2 + 195741^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1242340132042.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10709828667 + ... + 10709828782.

Almost surely, 2^{1242340132042} is an apocalyptic number.

1242340132042 is a deficient number, since it is larger than the sum of its proper divisors (685429038458).

1242340132042 is a wasteful number, since it uses less digits than its factorization.

1242340132042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21419657480.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1242340132042 its reverse (2402310432421), we get a palindrome (3644650564463).

The spelling of 1242340132042 in words is "one trillion, two hundred forty-two billion, three hundred forty million, one hundred thirty-two thousand, forty-two".