20433421042 has 16 divisors (see below), whose sum is σ = 30827672064. Its totient is φ = 10157590000.

The previous prime is 20433421039. The next prime is 20433421067. The reversal of 20433421042 is 24012433402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20433420998 and 20433421016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723792 + ... + 751492.

It is an arithmetic number, because the mean of its divisors is an integer number (1926729504).

Almost surely, 2^20433421042 is an apocalyptic number.

20433421042 is a deficient number, since it is larger than the sum of its proper divisors (10394251022).

20433421042 is a wasteful number, since it uses less digits than its factorization.

20433421042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29825.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 20433421042 its reverse (24012433402), we get a palindrome (44445854444).

The spelling of 20433421042 in words is "twenty billion, four hundred thirty-three million, four hundred twenty-one thousand, forty-two".