215124 has 48 divisors (see below), whose sum is σ = 620928. Its totient is φ = 56448.

The previous prime is 215123. The next prime is 215141. The reversal of 215124 is 421512.

215124 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 994 + ... + 1190.

It is an arithmetic number, because the mean of its divisors is an integer number (12936).

2²¹⁵¹²⁴ 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 215124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310464).

215124 is an abundant number, since it is smaller than the sum of its proper divisors (405804).

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

215124 is a wasteful number, since it uses less digits than its factorization.

215124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 222 counting only the distinct ones).

The product of its digits is 80, while the sum is 15.

The square root of 215124 is about 463.8146181396. The cubic root of 215124 is about 59.9187789910.

Adding to 215124 its reverse (421512), we get a palindrome (636636).

The spelling of 215124 in words is "two hundred fifteen thousand, one hundred twenty-four".