420566111 has 16 divisors (see below), whose sum is σ = 510223680. Its totient is φ = 338411520.

The previous prime is 420566099. The next prime is 420566123. The reversal of 420566111 is 111665024.

It is an interprime number because it is at equal distance from previous prime (420566099) and next prime (420566123).

It is not a de Polignac number, because 420566111 - 2¹⁰ = 420565087 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 (420566141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44351 + ... + 52991.

It is an arithmetic number, because the mean of its divisors is an integer number (31888980).

Almost surely, 2^420566111 is an apocalyptic number.

420566111 is a deficient number, since it is larger than the sum of its proper divisors (89657569).

420566111 is a wasteful number, since it uses less digits than its factorization.

420566111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9074.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 420566111 is about 20507.7085750700. The cubic root of 420566111 is about 749.2235585363.

The spelling of 420566111 in words is "four hundred twenty million, five hundred sixty-six thousand, one hundred eleven".