20242183 has 4 divisors (see below), whose sum is σ = 21799288. Its totient is φ = 18685080.

The previous prime is 20242177. The next prime is 20242199. The reversal of 20242183 is 38124202.

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 20242183 - 2⁹ = 20241671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20242483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 778533 + ... + 778558.

It is an arithmetic number, because the mean of its divisors is an integer number (5449822).

Almost surely, 2^20242183 is an apocalyptic number.

20242183 is a deficient number, since it is larger than the sum of its proper divisors (1557105).

20242183 is a wasteful number, since it uses less digits than its factorization.

20242183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557104.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 20242183 is about 4499.1313606073. The cubic root of 20242183 is about 272.5330117401.

Adding to 20242183 its reverse (38124202), we get a palindrome (58366385).

The spelling of 20242183 in words is "twenty million, two hundred forty-two thousand, one hundred eighty-three".