201243142 has 8 divisors (see below), whose sum is σ = 302130432. Its totient is φ = 100533000.

The previous prime is 201243131. The next prime is 201243157. The reversal of 201243142 is 241342102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 41409 + ... + 46012.

It is an arithmetic number, because the mean of its divisors is an integer number (37766304).

Almost surely, 2^201243142 is an apocalyptic number.

201243142 is a deficient number, since it is larger than the sum of its proper divisors (100887290).

201243142 is a wasteful number, since it uses less digits than its factorization.

201243142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88574.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 201243142 is about 14186.0192443123. The cubic root of 201243142 is about 586.0127022605.

Adding to 201243142 its reverse (241342102), we get a palindrome (442585244).

It can be divided in two parts, 2012 and 43142, that added together give a palindrome (45154).

The spelling of 201243142 in words is "two hundred one million, two hundred forty-three thousand, one hundred forty-two".