1042042105203 has 16 divisors (see below), whose sum is σ = 1518418814976. Its totient is φ = 630406833440.

The previous prime is 1042042105193. The next prime is 1042042105207. The reversal of 1042042105203 is 3025012402401.

It is a cyclic number.

It is not a de Polignac number, because 1042042105203 - 2¹⁷ = 1042041974131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1042042105207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28327251 + ... + 28364012.

It is an arithmetic number, because the mean of its divisors is an integer number (94901175936).

Almost surely, 2^{1042042105203} is an apocalyptic number.

1042042105203 is a deficient number, since it is larger than the sum of its proper divisors (476376709773).

1042042105203 is a wasteful number, since it uses less digits than its factorization.

1042042105203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56691834.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 1042042105203 its reverse (3025012402401), we get a palindrome (4067054507604).

The spelling of 1042042105203 in words is "one trillion, forty-two billion, forty-two million, one hundred five thousand, two hundred three".