1052420301665 has 4 divisors (see below), whose sum is σ = 1262904362004. Its totient is φ = 841936241328.

The previous prime is 1052420301631. The next prime is 1052420301679. The reversal of 1052420301665 is 5661030242501.

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 247933289041 + 804487012624 = 497929^2 + 896932^2 .

It is a cyclic number.

It is not a de Polignac number, because 1052420301665 - 2²⁴ = 1052403524449 is a prime.

It is a super-2 number, since 2×1052420301665² (a number of 25 digits) contains 22 as substring.

It is a Duffinian 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, 105242030162 + ... + 105242030171.

It is an arithmetic number, because the mean of its divisors is an integer number (315726090501).

Almost surely, 2^{1052420301665} is an apocalyptic number.

It is an amenable number.

1052420301665 is a deficient number, since it is larger than the sum of its proper divisors (210484060339).

1052420301665 is an equidigital number, since it uses as much as digits as its factorization.

1052420301665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210484060338.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 1052420301665 in words is "one trillion, fifty-two billion, four hundred twenty million, three hundred one thousand, six hundred sixty-five".