1042918710809 has 2 divisors, whose sum is σ = 1042918710810. Its totient is φ = 1042918710808.

The previous prime is 1042918710791. The next prime is 1042918710833. The reversal of 1042918710809 is 9080178192401.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 939633606409 + 103285104400 = 969347^2 + 321380^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042918710809 - 2²⁰ = 1042917662233 is a prime.

It is not a weakly prime, because it can be changed into another prime (1042918730809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521459355404 + 521459355405.

It is an arithmetic number, because the mean of its divisors is an integer number (521459355405).

Almost surely, 2^{1042918710809} is an apocalyptic number.

It is an amenable number.

1042918710809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042918710809 is an equidigital number, since it uses as much as digits as its factorization.

1042918710809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 50.

The spelling of 1042918710809 in words is "one trillion, forty-two billion, nine hundred eighteen million, seven hundred ten thousand, eight hundred nine".