20414243 has 2 divisors, whose sum is σ = 20414244. Its totient is φ = 20414242.

The previous prime is 20414203. The next prime is 20414257. The reversal of 20414243 is 34241402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20414243 - 2¹⁰ = 20413219 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20414203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10207121 + 10207122.

It is an arithmetic number, because the mean of its divisors is an integer number (10207122).

Almost surely, 2^20414243 is an apocalyptic number.

20414243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20414243 is an equidigital number, since it uses as much as digits as its factorization.

20414243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 20414243 is about 4518.2123677401. The cubic root of 20414243 is about 273.3030174917.

Adding to 20414243 its reverse (34241402), we get a palindrome (54655645).

The spelling of 20414243 in words is "twenty million, four hundred fourteen thousand, two hundred forty-three".