20242361 has 4 divisors (see below), whose sum is σ = 20260212. Its totient is φ = 20224512.

The previous prime is 20242351. The next prime is 20242363. The reversal of 20242361 is 16324202.

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 4687225 + 15555136 = 2165^2 + 3944^2 .

It is a cyclic number.

It is not a de Polignac number, because 20242361 - 2⁶ = 20242297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20242363) 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, 7100 + ... + 9533.

It is an arithmetic number, because the mean of its divisors is an integer number (5065053).

Almost surely, 2^20242361 is an apocalyptic number.

It is an amenable number.

20242361 is a deficient number, since it is larger than the sum of its proper divisors (17851).

20242361 is a wasteful number, since it uses less digits than its factorization.

20242361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17850.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20242361 is about 4499.1511421600. The cubic root of 20242361 is about 272.5338105791.

Adding to 20242361 its reverse (16324202), we get a palindrome (36566563).

The spelling of 20242361 in words is "twenty million, two hundred forty-two thousand, three hundred sixty-one".