249135 has 16 divisors (see below), whose sum is σ = 422496. Its totient is φ = 124928.

The previous prime is 249133. The next prime is 249143. The reversal of 249135 is 531942.

It is a cyclic number.

It is not a de Polignac number, because 249135 - 2¹ = 249133 is a prime.

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 249135.

It is not an unprimeable number, because it can be changed into a prime (249131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234 + ... + 743.

It is an arithmetic number, because the mean of its divisors is an integer number (26406).

2²⁴⁹¹³⁵ is an apocalyptic number.

249135 is a deficient number, since it is larger than the sum of its proper divisors (173361).

249135 is a wasteful number, since it uses less digits than its factorization.

249135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002.

The product of its digits is 1080, while the sum is 24.

The square root of 249135 is about 499.1342504778. The cubic root of 249135 is about 62.9233130901.

The spelling of 249135 in words is "two hundred forty-nine thousand, one hundred thirty-five".