20012042404 has 12 divisors (see below), whose sum is σ = 35101957324. Its totient is φ = 9982911744.

The previous prime is 20012042387. The next prime is 20012042417. The reversal of 20012042404 is 40424021002.

It can be written as a sum of positive squares in 2 ways, for example, as 7779240000 + 12232802404 = 88200^2 + 110602^2 .

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, 5775417 + ... + 5778880.

Almost surely, 2^20012042404 is an apocalyptic number.

It is an amenable number.

20012042404 is a deficient number, since it is larger than the sum of its proper divisors (15089914920).

20012042404 is a wasteful number, since it uses less digits than its factorization.

20012042404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11554734 (or 11554732 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 20012042404 its reverse (40424021002), we get a palindrome (60436063406).

The spelling of 20012042404 in words is "twenty billion, twelve million, forty-two thousand, four hundred four".