1042426353565 has 4 divisors (see below), whose sum is σ = 1250911624284. Its totient is φ = 833941082848.

The previous prime is 1042426353523. The next prime is 1042426353623. The reversal of 1042426353565 is 5653536242401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 161431989796 + 880994363769 = 401786^2 + 938613^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042426353565 - 2⁹ = 1042426353053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104242635352 + ... + 104242635361.

It is an arithmetic number, because the mean of its divisors is an integer number (312727906071).

Almost surely, 2^{1042426353565} is an apocalyptic number.

It is an amenable number.

1042426353565 is a deficient number, since it is larger than the sum of its proper divisors (208485270719).

1042426353565 is an equidigital number, since it uses as much as digits as its factorization.

1042426353565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208485270718.

The product of its (nonzero) digits is 2592000, while the sum is 46.

The spelling of 1042426353565 in words is "one trillion, forty-two billion, four hundred twenty-six million, three hundred fifty-three thousand, five hundred sixty-five".