20330242 has 16 divisors (see below), whose sum is σ = 31470840. Its totient is φ = 9842688.

The previous prime is 20330237. The next prime is 20330291. The reversal of 20330242 is 24203302.

It can be written as a sum of positive squares in 4 ways, for example, as 19882681 + 447561 = 4459^2 + 669^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18484 + ... + 19552.

Almost surely, 2^20330242 is an apocalyptic number.

20330242 is a deficient number, since it is larger than the sum of its proper divisors (11140598).

20330242 is a wasteful number, since it uses less digits than its factorization.

20330242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 20330242 is about 4508.9069628902. The cubic root of 20330242 is about 272.9276376168.

Adding to 20330242 its reverse (24203302), we get a palindrome (44533544).

The spelling of 20330242 in words is "twenty million, three hundred thirty thousand, two hundred forty-two".