420864111 has 6 divisors (see below), whose sum is σ = 607914840. Its totient is φ = 280576068.

The previous prime is 420864049. The next prime is 420864113. The reversal of 420864111 is 111468024.

It is a happy number.

420864111 is a `hidden beast` number, since 4 + 2 + 0 + 8 + 641 + 11 = 666.

It is not a de Polignac number, because 420864111 - 2¹¹ = 420862063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420864113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23381331 + ... + 23381348.

It is an arithmetic number, because the mean of its divisors is an integer number (101319140).

Almost surely, 2^420864111 is an apocalyptic number.

420864111 is a deficient number, since it is larger than the sum of its proper divisors (187050729).

420864111 is a wasteful number, since it uses less digits than its factorization.

420864111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46762685 (or 46762682 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 420864111 is about 20514.9728491168. The cubic root of 420864111 is about 749.4004755549.

The spelling of 420864111 in words is "four hundred twenty million, eight hundred sixty-four thousand, one hundred eleven".