420111 has 6 divisors (see below), whose sum is σ = 606840. Its totient is φ = 280068.

The previous prime is 420103. The next prime is 420149. The reversal of 420111 is 111024.

It is a happy number.

It is not a de Polignac number, because 420111 - 2³ = 420103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 46679 = 420111 / (4 + 2 + 0 + 1 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 420093 and 420102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420191) 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, 23331 + ... + 23348.

It is an arithmetic number, because the mean of its divisors is an integer number (101140).

2⁴²⁰¹¹¹ is an apocalyptic number.

420111 is a deficient number, since it is larger than the sum of its proper divisors (186729).

420111 is a wasteful number, since it uses less digits than its factorization.

420111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46685 (or 46682 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 420111 is about 648.1597025425. The cubic root of 420111 is about 74.8953206310.

Adding to 420111 its reverse (111024), we get a palindrome (531135).

The spelling of 420111 in words is "four hundred twenty thousand, one hundred eleven", and thus it is an iban number.