20204111242 has 16 divisors (see below), whose sum is σ = 34685044992. Its totient is φ = 8646548400.

The previous prime is 20204111219. The next prime is 20204111269. The reversal of 20204111242 is 24211140202.

It is a super-2 number, since 2×20204111242² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1019538 + ... + 1039165.

It is an arithmetic number, because the mean of its divisors is an integer number (2167815312).

Almost surely, 2^20204111242 is an apocalyptic number.

20204111242 is a deficient number, since it is larger than the sum of its proper divisors (14480933750).

20204111242 is a wasteful number, since it uses less digits than its factorization.

20204111242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059413.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20204111242 its reverse (24211140202), we get a palindrome (44415251444).

The spelling of 20204111242 in words is "twenty billion, two hundred four million, one hundred eleven thousand, two hundred forty-two".