124815 has 16 divisors (see below), whose sum is σ = 204768. Its totient is φ = 64896.

The previous prime is 124799. The next prime is 124819. The reversal of 124815 is 518421.

It is not a de Polignac number, because 124815 - 2⁴ = 124799 is a prime.

It is a super-3 number, since 3×124815³ = 5833397859130125, which contains 333 as substring.

124815 is a lucky number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 124791 and 124800.

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 124815.

It is not an unprimeable number, because it can be changed into a prime (124819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 717 + ... + 873.

It is an arithmetic number, because the mean of its divisors is an integer number (12798).

2¹²⁴⁸¹⁵ is an apocalyptic number.

124815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

124815 is a deficient number, since it is larger than the sum of its proper divisors (79953).

124815 is a wasteful number, since it uses less digits than its factorization.

124815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218.

The product of its digits is 320, while the sum is 21.

The square root of 124815 is about 353.2916642096. The cubic root of 124815 is about 49.9753211544.

It can be divided in two parts, 124 and 815, that added together give a palindrome (939).

The spelling of 124815 in words is "one hundred twenty-four thousand, eight hundred fifteen".