20404210042 has 16 divisors (see below), whose sum is σ = 30833712000. Its totient is φ = 10126340640.

The previous prime is 20404210031. The next prime is 20404210153. The reversal of 20404210042 is 24001240402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2250334 + ... + 2259382.

It is an arithmetic number, because the mean of its divisors is an integer number (1927107000).

Almost surely, 2^20404210042 is an apocalyptic number.

20404210042 is a deficient number, since it is larger than the sum of its proper divisors (10429501958).

20404210042 is a wasteful number, since it uses less digits than its factorization.

20404210042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17301.

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

Adding to 20404210042 its reverse (24001240402), we get a palindrome (44405450444).

The spelling of 20404210042 in words is "twenty billion, four hundred four million, two hundred ten thousand, forty-two".