201642243 has 8 divisors (see below), whose sum is σ = 293297856. Its totient is φ = 122207400.

The previous prime is 201642209. The next prime is 201642257. The reversal of 201642243 is 342246102.

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

It is not a de Polignac number, because 201642243 - 2¹² = 201638147 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (201642443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3055153 + ... + 3055218.

It is an arithmetic number, because the mean of its divisors is an integer number (36662232).

Almost surely, 2^201642243 is an apocalyptic number.

201642243 is a deficient number, since it is larger than the sum of its proper divisors (91655613).

201642243 is a wasteful number, since it uses less digits than its factorization.

201642243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110385.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 201642243 is about 14200.0789786536. The cubic root of 201642243 is about 586.3998356486.

Adding to 201642243 its reverse (342246102), we get a palindrome (543888345).

The spelling of 201642243 in words is "two hundred one million, six hundred forty-two thousand, two hundred forty-three".