20203421404 has 12 divisors (see below), whose sum is σ = 35553508200. Its totient is φ = 10045276208.

The previous prime is 20203421393. The next prime is 20203421417. The reversal of 20203421404 is 40412430202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14107819 + ... + 14109250.

It is an arithmetic number, because the mean of its divisors is an integer number (2962792350).

Almost surely, 2^20203421404 is an apocalyptic number.

It is an amenable number.

20203421404 is a deficient number, since it is larger than the sum of its proper divisors (15350086796).

20203421404 is a wasteful number, since it uses less digits than its factorization.

20203421404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28217252 (or 28217250 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20203421404 its reverse (40412430202), we get a palindrome (60615851606).

The spelling of 20203421404 in words is "twenty billion, two hundred three million, four hundred twenty-one thousand, four hundred four".