201142440020242 has 16 divisors (see below), whose sum is σ = 344820167766720. Its totient is φ = 86202763789968.

The previous prime is 201142440020239. The next prime is 201142440020261. The reversal of 201142440020242 is 242020044241102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 201142440020242.

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, 93825208 + ... + 95945059.

It is an arithmetic number, because the mean of its divisors is an integer number (21551260485420).

Almost surely, 2^{201142440020242} is an apocalyptic number.

201142440020242 is a deficient number, since it is larger than the sum of its proper divisors (143677727746478).

201142440020242 is a wasteful number, since it uses less digits than its factorization.

201142440020242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189845985.

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 201142440020242 its reverse (242020044241102), we get a palindrome (443162484261344).

The spelling of 201142440020242 in words is "two hundred one trillion, one hundred forty-two billion, four hundred forty million, twenty thousand, two hundred forty-two".