201243141 has 12 divisors (see below), whose sum is σ = 317110560. Its totient is φ = 121965480.

The previous prime is 201243131. The next prime is 201243157. The reversal of 201243141 is 141342102.

It is not a de Polignac number, because 201243141 - 2⁵ = 201243109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201243101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1016281 + ... + 1016478.

It is an arithmetic number, because the mean of its divisors is an integer number (26425880).

Almost surely, 2^201243141 is an apocalyptic number.

It is an amenable number.

201243141 is a deficient number, since it is larger than the sum of its proper divisors (115867419).

201243141 is a wasteful number, since it uses less digits than its factorization.

201243141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032776 (or 2032773 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 201243141 is about 14186.0192090664. The cubic root of 201243141 is about 586.0127012899.

Adding to 201243141 its reverse (141342102), we get a palindrome (342585243).

It can be divided in two parts, 201 and 243141, that added together give a palindrome (243342).

The spelling of 201243141 in words is "two hundred one million, two hundred forty-three thousand, one hundred forty-one".