2140249 has 4 divisors (see below), whose sum is σ = 2266164. Its totient is φ = 2014336.

The previous prime is 2140231. The next prime is 2140253. The reversal of 2140249 is 9420412.

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 1774224 + 366025 = 1332^2 + 605^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140249 - 2⁷ = 2140121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2140279) 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, 62932 + ... + 62965.

It is an arithmetic number, because the mean of its divisors is an integer number (566541).

2^2140249 is an apocalyptic number.

It is an amenable number.

2140249 is a deficient number, since it is larger than the sum of its proper divisors (125915).

2140249 is a wasteful number, since it uses less digits than its factorization.

2140249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125914.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2140249 is about 1462.9589878052. The cubic root of 2140249 is about 128.8708721293.

The spelling of 2140249 in words is "two million, one hundred forty thousand, two hundred forty-nine".