420535111 has 4 divisors (see below), whose sum is σ = 420754824. Its totient is φ = 420315400.

The previous prime is 420535099. The next prime is 420535123. The reversal of 420535111 is 111535024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (420535099) and next prime (420535123).

It is a cyclic number.

It is not a de Polignac number, because 420535111 - 2²¹ = 418437959 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 (420535211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106960 + ... + 110821.

It is an arithmetic number, because the mean of its divisors is an integer number (105188706).

Almost surely, 2^420535111 is an apocalyptic number.

420535111 is a deficient number, since it is larger than the sum of its proper divisors (219713).

420535111 is a wasteful number, since it uses less digits than its factorization.

420535111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219712.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 420535111 is about 20506.9527477878. The cubic root of 420535111 is about 749.2051496185.

The spelling of 420535111 in words is "four hundred twenty million, five hundred thirty-five thousand, one hundred eleven".