420522523117 has 12 divisors (see below), whose sum is σ = 423466457596. Its totient is φ = 417586259520.

The previous prime is 420522523093. The next prime is 420522523159. The reversal of 420522523117 is 711325225024.

It can be written as a sum of positive squares in 2 ways, for example, as 140110970596 + 280411552521 = 374314^2 + 529539^2 .

It is not a de Polignac number, because 420522523117 - 2¹⁹ = 420521998829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420522523177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142403713 + ... + 142406665.

Almost surely, 2^420522523117 is an apocalyptic number.

It is an amenable number.

420522523117 is a deficient number, since it is larger than the sum of its proper divisors (2943934479).

420522523117 is an frugal number, since it uses more digits than its factorization.

420522523117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4908 (or 4021 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 420522523117 in words is "four hundred twenty billion, five hundred twenty-two million, five hundred twenty-three thousand, one hundred seventeen".