2138201 has 4 divisors (see below), whose sum is σ = 2302692. Its totient is φ = 1973712.

The previous prime is 2138197. The next prime is 2138207. The reversal of 2138201 is 1028312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 121801 + 2016400 = 349^2 + 1420^2 .

It is not a de Polignac number, because 2138201 - 2² = 2138197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2138201.

It is not an unprimeable number, because it can be changed into a prime (2138207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82226 + ... + 82251.

It is an arithmetic number, because the mean of its divisors is an integer number (575673).

2^2138201 is an apocalyptic number.

It is an amenable number.

2138201 is a deficient number, since it is larger than the sum of its proper divisors (164491).

2138201 is a wasteful number, since it uses less digits than its factorization.

2138201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164490.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2138201 is about 1462.2588690105. The cubic root of 2138201 is about 128.8297535843.

The spelling of 2138201 in words is "two million, one hundred thirty-eight thousand, two hundred one".