201642 has 16 divisors (see below), whose sum is σ = 460992. Its totient is φ = 57600.

The previous prime is 201629. The next prime is 201653. The reversal of 201642 is 246102.

201642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2359 + ... + 2442.

It is an arithmetic number, because the mean of its divisors is an integer number (28812).

2²⁰¹⁶⁴² is an apocalyptic number.

201642 is an abundant number, since it is smaller than the sum of its proper divisors (259350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201642 is a wasteful number, since it uses less digits than its factorization.

201642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4813.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 201642 is about 449.0456546945. The cubic root of 201642 is about 58.6399600091.

Adding to 201642 its reverse (246102), we get a palindrome (447744).

The spelling of 201642 in words is "two hundred one thousand, six hundred forty-two".