2140161 has 8 divisors (see below), whose sum is σ = 2860704. Its totient is φ = 1423200.

The previous prime is 2140157. The next prime is 2140163. The reversal of 2140161 is 1610412.

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

It is not a de Polignac number, because 2140161 - 2² = 2140157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2140161.

It is not an unprimeable number, because it can be changed into a prime (2140163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1210 + ... + 2396.

It is an arithmetic number, because the mean of its divisors is an integer number (357588).

It is a Proth number, since it is equal to 1045 ⋅ 2¹¹ + 1 and 1045 < 2¹¹.

2^2140161 is an apocalyptic number.

It is an amenable number.

2140161 is a deficient number, since it is larger than the sum of its proper divisors (720543).

2140161 is a wasteful number, since it uses less digits than its factorization.

2140161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2140161 is about 1462.9289114649. The cubic root of 2140161 is about 128.8691058563.

Adding to 2140161 its reverse (1610412), we get a palindrome (3750573).

The spelling of 2140161 in words is "two million, one hundred forty thousand, one hundred sixty-one".