20404200242 has 16 divisors (see below), whose sum is σ = 31216819392. Its totient is φ = 10000255440.

The previous prime is 20404200239. The next prime is 20404200259. The reversal of 20404200242 is 24200240402.

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, 390728 + ... + 439859.

It is an arithmetic number, because the mean of its divisors is an integer number (1951051212).

Almost surely, 2^20404200242 is an apocalyptic number.

20404200242 is a deficient number, since it is larger than the sum of its proper divisors (10812619150).

20404200242 is a wasteful number, since it uses less digits than its factorization.

20404200242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830833.

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20404200242 its reverse (24200240402), we get a palindrome (44604440644).

The spelling of 20404200242 in words is "twenty billion, four hundred four million, two hundred thousand, two hundred forty-two".