201142244 has 6 divisors (see below), whose sum is σ = 351998934. Its totient is φ = 100571120.

The previous prime is 201142243. The next prime is 201142259. The reversal of 201142244 is 442241102.

It can be written as a sum of positive squares in only one way, i.e., 137780644 + 63361600 = 11738^2 + 7960^2 .

It is not an unprimeable number, because it can be changed into a prime (201142243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25142777 + ... + 25142784.

It is an arithmetic number, because the mean of its divisors is an integer number (58666489).

Almost surely, 2^201142244 is an apocalyptic number.

It is an amenable number.

201142244 is a deficient number, since it is larger than the sum of its proper divisors (150856690).

201142244 is a wasteful number, since it uses less digits than its factorization.

201142244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50285565 (or 50285563 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 201142244 is about 14182.4625506292. The cubic root of 201142244 is about 585.9147487875.

Adding to 201142244 its reverse (442241102), we get a palindrome (643383346).

The spelling of 201142244 in words is "two hundred one million, one hundred forty-two thousand, two hundred forty-four".