1242340013042 has 8 divisors (see below), whose sum is σ = 1894059364332. Its totient is φ = 610986891600.

The previous prime is 1242340013027. The next prime is 1242340013059. The reversal of 1242340013042 is 2403100432421.

It can be written as a sum of positive squares in 2 ways, for example, as 1235896900681 + 6443112361 = 1111709^2 + 80269^2 .

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

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, 5091557309 + ... + 5091557552.

Almost surely, 2^{1242340013042} is an apocalyptic number.

1242340013042 is a deficient number, since it is larger than the sum of its proper divisors (651719351290).

1242340013042 is a wasteful number, since it uses less digits than its factorization.

1242340013042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10183114924.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1242340013042 its reverse (2403100432421), we get a palindrome (3645440445463).

The spelling of 1242340013042 in words is "one trillion, two hundred forty-two billion, three hundred forty million, thirteen thousand, forty-two".