20331240042 has 64 divisors (see below), whose sum is σ = 41499216000. Its totient is φ = 6639522048.

The previous prime is 20331239983. The next prime is 20331240071. The reversal of 20331240042 is 24004213302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28675584 + ... + 28676292.

It is an arithmetic number, because the mean of its divisors is an integer number (648425250).

Almost surely, 2^20331240042 is an apocalyptic number.

20331240042 is an abundant number, since it is smaller than the sum of its proper divisors (21167975958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20331240042 is a wasteful number, since it uses less digits than its factorization.

20331240042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20331240042 its reverse (24004213302), we get a palindrome (44335453344).

The spelling of 20331240042 in words is "twenty billion, three hundred thirty-one million, two hundred forty thousand, forty-two".