420199 has 4 divisors (see below), whose sum is σ = 452536. Its totient is φ = 387864.

The previous prime is 420193. The next prime is 420221. The reversal of 420199 is 991024.

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

It is a cyclic number.

It is not a de Polignac number, because 420199 - 2³ = 420191 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16149 + ... + 16174.

It is an arithmetic number, because the mean of its divisors is an integer number (113134).

2⁴²⁰¹⁹⁹ is an apocalyptic number.

420199 is a deficient number, since it is larger than the sum of its proper divisors (32337).

420199 is a wasteful number, since it uses less digits than its factorization.

420199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32336.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 420199 is about 648.2275834921. The cubic root of 420199 is about 74.9005496682.

The spelling of 420199 in words is "four hundred twenty thousand, one hundred ninety-nine".