20430241 has 6 divisors (see below), whose sum is σ = 22122870. Its totient is φ = 18858528.

The previous prime is 20430191. The next prime is 20430251. The reversal of 20430241 is 14203402.

It can be written as a sum of positive squares in 3 ways, for example, as 216225 + 20214016 = 465^2 + 4496^2 .

It is not a de Polignac number, because 20430241 - 2²³ = 12041633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20430251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60276 + ... + 60613.

It is an arithmetic number, because the mean of its divisors is an integer number (3687145).

Almost surely, 2^20430241 is an apocalyptic number.

It is an amenable number.

20430241 is a deficient number, since it is larger than the sum of its proper divisors (1692629).

20430241 is a wasteful number, since it uses less digits than its factorization.

20430241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120915 (or 120902 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20430241 is about 4519.9824114702. The cubic root of 20430241 is about 273.3743918426.

Adding to 20430241 its reverse (14203402), we get a palindrome (34633643).

The spelling of 20430241 in words is "twenty million, four hundred thirty thousand, two hundred forty-one".