2140065 has 24 divisors (see below), whose sum is σ = 3906240. Its totient is φ = 1080864.

The previous prime is 2140057. The next prime is 2140069. The reversal of 2140065 is 5600412.

It is a happy number.

It is not a de Polignac number, because 2140065 - 2³ = 2140057 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2140069) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 397 + ... + 2106.

It is an arithmetic number, because the mean of its divisors is an integer number (162760).

2^2140065 is an apocalyptic number.

It is an amenable number.

2140065 is a deficient number, since it is larger than the sum of its proper divisors (1766175).

2140065 is a wasteful number, since it uses less digits than its factorization.

2140065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2533 (or 2530 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2140065 is about 1462.8961002067. The cubic root of 2140065 is about 128.8671789578.

Adding to 2140065 its reverse (5600412), we get a palindrome (7740477).

The spelling of 2140065 in words is "two million, one hundred forty thousand, sixty-five".