1042721776105 has 16 divisors (see below), whose sum is σ = 1324894855680. Its totient is φ = 785093444352.

The previous prime is 1042721776091. The next prime is 1042721776111. The reversal of 1042721776105 is 5016771272401.

It is a cyclic number.

It is not a de Polignac number, because 1042721776105 - 2²¹ = 1042719678953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7077886 + ... + 7223704.

It is an arithmetic number, because the mean of its divisors is an integer number (82805928480).

Almost surely, 2^{1042721776105} is an apocalyptic number.

It is an amenable number.

1042721776105 is a deficient number, since it is larger than the sum of its proper divisors (282173079575).

1042721776105 is a wasteful number, since it uses less digits than its factorization.

1042721776105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229968.

The product of its (nonzero) digits is 164640, while the sum is 43.

The spelling of 1042721776105 in words is "one trillion, forty-two billion, seven hundred twenty-one million, seven hundred seventy-six thousand, one hundred five".