20402200042 has 16 divisors (see below), whose sum is σ = 34988627520. Its totient is φ = 8740443168.

The previous prime is 20402200003. The next prime is 20402200043. The reversal of 20402200042 is 24000220402.

It is a junction number, because it is equal to n+sod(n) for n = 20402199989 and 20402200025.

It is not an unprimeable number, because it can be changed into a prime (20402200043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241792 + ... + 315067.

It is an arithmetic number, because the mean of its divisors is an integer number (2186789220).

Almost surely, 2^20402200042 is an apocalyptic number.

20402200042 is a deficient number, since it is larger than the sum of its proper divisors (14586427478).

20402200042 is a wasteful number, since it uses less digits than its factorization.

20402200042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559485.

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 20402200042 its reverse (24000220402), we get a palindrome (44402420444).

The spelling of 20402200042 in words is "twenty billion, four hundred two million, two hundred thousand, forty-two".