124215 has 36 divisors (see below), whose sum is σ = 250344. Its totient is φ = 52416.

The previous prime is 124213. The next prime is 124231. The reversal of 124215 is 512421.

It is not a de Polignac number, because 124215 - 2¹ = 124213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

124215 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 124194 and 124203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124213) 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 35 ways as a sum of consecutive naturals, for example, 9549 + ... + 9561.

It is an arithmetic number, because the mean of its divisors is an integer number (6954).

2¹²⁴²¹⁵ is an apocalyptic number.

124215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

124215 is an abundant number, since it is smaller than the sum of its proper divisors (126129).

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

124215 is a wasteful number, since it uses less digits than its factorization.

124215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48 (or 28 counting only the distinct ones).

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

The square root of 124215 is about 352.4414845049. The cubic root of 124215 is about 49.8951134635.

Multiplying 124215 by its sum of digits (15), we get a square (1863225 = 1365²).

124215 divided by its sum of digits (15) gives a square (8281 = 91²).

Adding to 124215 its reverse (512421), we get a palindrome (636636).

The spelling of 124215 in words is "one hundred twenty-four thousand, two hundred fifteen".