420115274569 has 9 divisors (see below), whose sum is σ = 439190909479. Its totient is φ = 401835133480.

The previous prime is 420115274563. The next prime is 420115274629. The reversal of 420115274569 is 965472511024.

The square root of 420115274569 is 648163.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 383672464569 + 36442810000 = 619413^2 + 190900^2 .

It is a de Polignac number, because none of the positive numbers 2^k-420115274569 is a prime.

It is a super-2 number, since 2×420115274569² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420115274563) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14893659 + ... + 14921839.

Almost surely, 2^420115274569 is an apocalyptic number.

420115274569 is the 648163-rd square number.

420115274569 is the 324082-nd centered octagonal number.

It is an amenable number.

420115274569 is a deficient number, since it is larger than the sum of its proper divisors (19075634910).

420115274569 is an frugal number, since it uses more digits than its factorization.

420115274569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56408 (or 28204 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 420115274569 in words is "four hundred twenty billion, one hundred fifteen million, two hundred seventy-four thousand, five hundred sixty-nine".