1042721775755 has 16 divisors (see below), whose sum is σ = 1401909967584. Its totient is φ = 737847348480.

The previous prime is 1042721775749. The next prime is 1042721775791. The reversal of 1042721775755 is 5575771272401.

1042721775755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1042721775755 - 2⁸ = 1042721775499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1042721775697 and 1042721775706.

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, 256194962 + ... + 256199031.

It is an arithmetic number, because the mean of its divisors is an integer number (87619372974).

Almost surely, 2^{1042721775755} is an apocalyptic number.

1042721775755 is a deficient number, since it is larger than the sum of its proper divisors (359188191829).

1042721775755 is a wasteful number, since it uses less digits than its factorization.

1042721775755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512394046.

The product of its (nonzero) digits is 4802000, while the sum is 53.

The spelling of 1042721775755 in words is "one trillion, forty-two billion, seven hundred twenty-one million, seven hundred seventy-five thousand, seven hundred fifty-five".