20242205 has 4 divisors (see below), whose sum is σ = 24290652. Its totient is φ = 16193760.

The previous prime is 20242199. The next prime is 20242213. The reversal of 20242205 is 50224202.

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 6853924 + 13388281 = 2618^2 + 3659^2 .

It is not a de Polignac number, because 20242205 - 2¹⁸ = 19980061 is a prime.

It is a Duffinian 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, 2024216 + ... + 2024225.

It is an arithmetic number, because the mean of its divisors is an integer number (6072663).

Almost surely, 2^20242205 is an apocalyptic number.

It is an amenable number.

20242205 is a deficient number, since it is larger than the sum of its proper divisors (4048447).

20242205 is an equidigital number, since it uses as much as digits as its factorization.

20242205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048446.

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

The square root of 20242205 is about 4499.1338055230. The cubic root of 20242205 is about 272.5331104732.

Adding to 20242205 its reverse (50224202), we get a palindrome (70466407).

The spelling of 20242205 in words is "twenty million, two hundred forty-two thousand, two hundred five".