1042721776111 has 2 divisors, whose sum is σ = 1042721776112. Its totient is φ = 1042721776110.

The previous prime is 1042721776091. The next prime is 1042721776147. The reversal of 1042721776111 is 1116771272401.

It is a weak prime.

It is an emirp because it is prime and its reverse (1116771272401) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042721776111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042721773111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521360888055 + 521360888056.

It is an arithmetic number, because the mean of its divisors is an integer number (521360888056).

Almost surely, 2^{1042721776111} is an apocalyptic number.

1042721776111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042721776111 is an equidigital number, since it uses as much as digits as its factorization.

1042721776111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32928, while the sum is 40.

The spelling of 1042721776111 in words is "one trillion, forty-two billion, seven hundred twenty-one million, seven hundred seventy-six thousand, one hundred eleven".