249141 has 4 divisors (see below), whose sum is σ = 332192. Its totient is φ = 166092.

The previous prime is 249133. The next prime is 249143. The reversal of 249141 is 141942.

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.

It is not a de Polignac number, because 249141 - 2³ = 249133 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 249141.

It is not an unprimeable number, because it can be changed into a prime (249143) 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, 41521 + ... + 41526.

It is an arithmetic number, because the mean of its divisors is an integer number (83048).

2²⁴⁹¹⁴¹ is an apocalyptic number.

It is an amenable number.

249141 is a deficient number, since it is larger than the sum of its proper divisors (83051).

249141 is an equidigital number, since it uses as much as digits as its factorization.

249141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83050.

The product of its digits is 288, while the sum is 21.

The square root of 249141 is about 499.1402608486. The cubic root of 249141 is about 62.9238182204.

The spelling of 249141 in words is "two hundred forty-nine thousand, one hundred forty-one".