204421202241442 has 4 divisors (see below), whose sum is σ = 306631803362166. Its totient is φ = 102210601120720.

The previous prime is 204421202241413. The next prime is 204421202241457. The reversal of 204421202241442 is 244142202124402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 204348997714761 + 72204526681 = 14295069^2 + 268709^2 .

It is a junction number, because it is equal to n+sod(n) for n = 204421202241398 and 204421202241407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105300560359 + ... + 51105300560362.

Almost surely, 2^{204421202241442} is an apocalyptic number.

204421202241442 is a deficient number, since it is larger than the sum of its proper divisors (102210601120724).

204421202241442 is a wasteful number, since it uses less digits than its factorization.

204421202241442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102210601120723.

The product of its (nonzero) digits is 65536, while the sum is 34.

Adding to 204421202241442 its reverse (244142202124402), we get a palindrome (448563404365844).

The spelling of 204421202241442 in words is "two hundred four trillion, four hundred twenty-one billion, two hundred two million, two hundred forty-one thousand, four hundred forty-two".