20004121304 has 16 divisors (see below), whose sum is σ = 37517386200. Its totient is φ = 9999484992.

The previous prime is 20004121273. The next prime is 20004121309. The reversal of 20004121304 is 40312140002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004121309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288749 + ... + 351260.

Almost surely, 2^20004121304 is an apocalyptic number.

It is an amenable number.

20004121304 is a deficient number, since it is larger than the sum of its proper divisors (17513264896).

20004121304 is a wasteful number, since it uses less digits than its factorization.

20004121304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643922 (or 643918 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20004121304 its reverse (40312140002), we get a palindrome (60316261306).

The spelling of 20004121304 in words is "twenty billion, four million, one hundred twenty-one thousand, three hundred four".