20242351 has 2 divisors, whose sum is σ = 20242352. Its totient is φ = 20242350.

The previous prime is 20242333. The next prime is 20242363. The reversal of 20242351 is 15324202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20242351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20242331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121175 + 10121176.

It is an arithmetic number, because the mean of its divisors is an integer number (10121176).

Almost surely, 2^20242351 is an apocalyptic number.

20242351 is a deficient number, since it is larger than the sum of its proper divisors (1).

20242351 is an equidigital number, since it uses as much as digits as its factorization.

20242351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20242351 is about 4499.1500308392. The cubic root of 20242351 is about 272.5337657006.

Adding to 20242351 its reverse (15324202), we get a palindrome (35566553).

The spelling of 20242351 in words is "twenty million, two hundred forty-two thousand, three hundred fifty-one".