4219205 has 4 divisors (see below), whose sum is σ = 5063052. Its totient is φ = 3375360.

The previous prime is 4219183. The next prime is 4219211. The reversal of 4219205 is 5029124.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1552516 + 2666689 = 1246^2 + 1633^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4219205 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421916 + ... + 421925.

It is an arithmetic number, because the mean of its divisors is an integer number (1265763).

Almost surely, 2^4219205 is an apocalyptic number.

It is an amenable number.

4219205 is a deficient number, since it is larger than the sum of its proper divisors (843847).

4219205 is an equidigital number, since it uses as much as digits as its factorization.

4219205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843846.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 4219205 is about 2054.0703493308. The cubic root of 4219205 is about 161.5884105378.

The spelling of 4219205 in words is "four million, two hundred nineteen thousand, two hundred five".