2140641 has 8 divisors (see below), whose sum is σ = 3171360. Its totient is φ = 1427076.

The previous prime is 2140637. The next prime is 2140681. The reversal of 2140641 is 1460412.

2140641 is a `hidden beast` number, since 21 + 4 + 0 + 641 = 666.

It is not a de Polignac number, because 2140641 - 2² = 2140637 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2140601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39615 + ... + 39668.

It is an arithmetic number, because the mean of its divisors is an integer number (396420).

2^2140641 is an apocalyptic number.

It is an amenable number.

2140641 is a deficient number, since it is larger than the sum of its proper divisors (1030719).

2140641 is an equidigital number, since it uses as much as digits as its factorization.

2140641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79292 (or 79286 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2140641 is about 1463.0929567187. The cubic root of 2140641 is about 128.8787394846.

The spelling of 2140641 in words is "two million, one hundred forty thousand, six hundred forty-one".