1042243353503 has 16 divisors (see below), whose sum is σ = 1212662111904. Its totient is φ = 885249807360.

The previous prime is 1042243353491. The next prime is 1042243353521. The reversal of 1042243353503 is 3053533422401.

It is not a de Polignac number, because 1042243353503 - 2²⁰ = 1042242304927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042243356503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20315600 + ... + 20366837.

It is an arithmetic number, because the mean of its divisors is an integer number (75791381994).

Almost surely, 2^{1042243353503} is an apocalyptic number.

1042243353503 is a deficient number, since it is larger than the sum of its proper divisors (170418758401).

1042243353503 is a wasteful number, since it uses less digits than its factorization.

1042243353503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40682602.

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 1042243353503 its reverse (3053533422401), we get a palindrome (4095776775904).

The spelling of 1042243353503 in words is "one trillion, forty-two billion, two hundred forty-three million, three hundred fifty-three thousand, five hundred three".