249042 has 8 divisors (see below), whose sum is σ = 498096. Its totient is φ = 83012.

The previous prime is 249037. The next prime is 249059. The reversal of 249042 is 240942.

It is a sphenic number, since it is the product of 3 distinct primes.

249042 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20748 + ... + 20759.

It is an arithmetic number, because the mean of its divisors is an integer number (62262).

2²⁴⁹⁰⁴² is an apocalyptic number.

249042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249042 is a wasteful number, since it uses less digits than its factorization.

249042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41512.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 249042 is about 499.0410804733. The cubic root of 249042 is about 62.9154825345.

Adding to 249042 its reverse (240942), we get a palindrome (489984).

Subtracting from 249042 its reverse (240942), we obtain a square (8100 = 90²).

The spelling of 249042 in words is "two hundred forty-nine thousand, forty-two".