249241 has 4 divisors (see below), whose sum is σ = 254592. Its totient is φ = 243892.

The previous prime is 249233. The next prime is 249253. The reversal of 249241 is 142942.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 142942 = 2 ⋅71471.

It is a cyclic number.

It is not a de Polignac number, because 249241 - 2³ = 249233 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2605 + ... + 2698.

It is an arithmetic number, because the mean of its divisors is an integer number (63648).

2²⁴⁹²⁴¹ is an apocalyptic number.

It is an amenable number.

249241 is a deficient number, since it is larger than the sum of its proper divisors (5351).

249241 is an equidigital number, since it uses as much as digits as its factorization.

249241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5350.

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

The square root of 249241 is about 499.2404230428. The cubic root of 249241 is about 62.9322358636.

The spelling of 249241 in words is "two hundred forty-nine thousand, two hundred forty-one".