4042205 has 4 divisors (see below), whose sum is σ = 4850652. Its totient is φ = 3233760.

The previous prime is 4042163. The next prime is 4042211. The reversal of 4042205 is 5022404.

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 2948089 + 1094116 = 1717^2 + 1046^2 .

It is not a de Polignac number, because 4042205 - 2⁸ = 4041949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404216 + ... + 404225.

It is an arithmetic number, because the mean of its divisors is an integer number (1212663).

Almost surely, 2^4042205 is an apocalyptic number.

It is an amenable number.

4042205 is a deficient number, since it is larger than the sum of its proper divisors (808447).

4042205 is an equidigital number, since it uses as much as digits as its factorization.

4042205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808446.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 4042205 is about 2010.5235636520. The cubic root of 4042205 is about 159.2964552097.

Adding to 4042205 its reverse (5022404), we get a palindrome (9064609).

The spelling of 4042205 in words is "four million, forty-two thousand, two hundred five".