20013124205042 has 16 divisors (see below), whose sum is σ = 30386917737792. Its totient is φ = 9884195661360.

The previous prime is 20013124205027. The next prime is 20013124205057. The reversal of 20013124205042 is 24050242131002.

It is an interprime number because it is at equal distance from previous prime (20013124205027) and next prime (20013124205057).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10096934 + ... + 11915297.

It is an arithmetic number, because the mean of its divisors is an integer number (1899182358612).

Almost surely, 2^{20013124205042} is an apocalyptic number.

20013124205042 is a deficient number, since it is larger than the sum of its proper divisors (10373793532750).

20013124205042 is a wasteful number, since it uses less digits than its factorization.

20013124205042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22017793.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 20013124205042 its reverse (24050242131002), we get a palindrome (44063366336044).

The spelling of 20013124205042 in words is "twenty trillion, thirteen billion, one hundred twenty-four million, two hundred five thousand, forty-two".