1042761042749 has 2 divisors, whose sum is σ = 1042761042750. Its totient is φ = 1042761042748.

The previous prime is 1042761042733. The next prime is 1042761042767. The reversal of 1042761042749 is 9472401672401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 688206294724 + 354554748025 = 829582^2 + 595445^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042761042749 - 2⁴ = 1042761042733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042761042949) 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 as a sum of consecutive naturals, namely, 521380521374 + 521380521375.

It is an arithmetic number, because the mean of its divisors is an integer number (521380521375).

Almost surely, 2^{1042761042749} is an apocalyptic number.

It is an amenable number.

1042761042749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042761042749 is an equidigital number, since it uses as much as digits as its factorization.

1042761042749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 1042761042749 in words is "one trillion, forty-two billion, seven hundred sixty-one million, forty-two thousand, seven hundred forty-nine".