642201 has 16 divisors (see below), whose sum is σ = 998784. Its totient is φ = 359424.

The previous prime is 642199. The next prime is 642211. The reversal of 642201 is 102246.

642201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 642201 - 2¹ = 642199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 825 + ... + 1401.

It is an arithmetic number, because the mean of its divisors is an integer number (62424).

2⁶⁴²²⁰¹ is an apocalyptic number.

It is an amenable number.

642201 is a deficient number, since it is larger than the sum of its proper divisors (356583).

642201 is a wasteful number, since it uses less digits than its factorization.

642201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640.

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

The square root of 642201 is about 801.3744443143. The cubic root of 642201 is about 86.2760643764.

Adding to 642201 its reverse (102246), we get a palindrome (744447).

The spelling of 642201 in words is "six hundred forty-two thousand, two hundred one".