250542 has 24 divisors (see below), whose sum is σ = 561600. Its totient is φ = 80640.

The previous prime is 250501. The next prime is 250543. The reversal of 250542 is 245052.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 250542.

It is not an unprimeable number, because it can be changed into a prime (250543) by changing a digit.

250542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 11 ways as a sum of consecutive naturals, for example, 334 + ... + 782.

It is an arithmetic number, because the mean of its divisors is an integer number (23400).

2²⁵⁰⁵⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280800).

250542 is an abundant number, since it is smaller than the sum of its proper divisors (311058).

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

250542 is a wasteful number, since it uses less digits than its factorization.

250542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 250542 is about 500.5417065540. The cubic root of 250542 is about 63.0415447821.

Adding to 250542 its reverse (245052), we get a palindrome (495594).

The spelling of 250542 in words is "two hundred fifty thousand, five hundred forty-two".