2140867 has 4 divisors (see below), whose sum is σ = 2214720. Its totient is φ = 2067016.

The previous prime is 2140849. The next prime is 2140877. The reversal of 2140867 is 7680412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2140867 is a prime.

It is a Duffinian number.

2140867 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2140807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36883 + ... + 36940.

It is an arithmetic number, because the mean of its divisors is an integer number (553680).

2^2140867 is an apocalyptic number.

2140867 is a deficient number, since it is larger than the sum of its proper divisors (73853).

2140867 is an equidigital number, since it uses as much as digits as its factorization.

2140867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73852.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 2140867 is about 1463.1701883240. The cubic root of 2140867 is about 128.8832748193.

The spelling of 2140867 in words is "two million, one hundred forty thousand, eight hundred sixty-seven".