1042520566543 has 2 divisors, whose sum is σ = 1042520566544. Its totient is φ = 1042520566542.

The previous prime is 1042520566501. The next prime is 1042520566561. The reversal of 1042520566543 is 3456650252401.

It is a strong prime.

It is an emirp because it is prime and its reverse (3456650252401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042520566543 - 2²⁵ = 1042487012111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1042520566543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042520569543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521260283271 + 521260283272.

It is an arithmetic number, because the mean of its divisors is an integer number (521260283272).

Almost surely, 2^{1042520566543} is an apocalyptic number.

1042520566543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042520566543 is an equidigital number, since it uses as much as digits as its factorization.

1042520566543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 1042520566543 in words is "one trillion, forty-two billion, five hundred twenty million, five hundred sixty-six thousand, five hundred forty-three".