1205112854242 has 64 divisors (see below), whose sum is σ = 2181445945344. Its totient is φ = 492538717440.

The previous prime is 1205112854237. The next prime is 1205112854243. The reversal of 1205112854242 is 2424582115021.

It is not an unprimeable number, because it can be changed into a prime (1205112854243) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 6994333 + ... + 7164559.

It is an arithmetic number, because the mean of its divisors is an integer number (34085092896).

Almost surely, 2^{1205112854242} is an apocalyptic number.

1205112854242 is a deficient number, since it is larger than the sum of its proper divisors (976333091102).

1205112854242 is a wasteful number, since it uses less digits than its factorization.

1205112854242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171103.

The product of its (nonzero) digits is 51200, while the sum is 37.

Adding to 1205112854242 its reverse (2424582115021), we get a palindrome (3629694969263).

The spelling of 1205112854242 in words is "one trillion, two hundred five billion, one hundred twelve million, eight hundred fifty-four thousand, two hundred forty-two".