243124 has 24 divisors (see below), whose sum is σ = 512960. Its totient is φ = 98496.

The previous prime is 243121. The next prime is 243137. The reversal of 243124 is 421342.

It is an Ulam number.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 243098 and 243107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243121) 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 7 ways as a sum of consecutive naturals, for example, 304 + ... + 760.

2²⁴³¹²⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256480).

243124 is an abundant number, since it is smaller than the sum of its proper divisors (269836).

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

243124 is a wasteful number, since it uses less digits than its factorization.

243124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 485 counting only the distinct ones).

The product of its digits is 192, while the sum is 16.

The square root of 243124 is about 493.0760590416. The cubic root of 243124 is about 62.4131273061.

Adding to 243124 its reverse (421342), we get a palindrome (664466).

The spelling of 243124 in words is "two hundred forty-three thousand, one hundred twenty-four", and thus it is an iban number.