124520 has 32 divisors (see below), whose sum is σ = 306720. Its totient is φ = 45120.

The previous prime is 124513. The next prime is 124529. The reversal of 124520 is 25421.

It is a junction number, because it is equal to n+sod(n) for n = 124495 and 124504.

It is not an unprimeable number, because it can be changed into a prime (124529) by changing a digit.

124520 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299 + ... + 581.

It is an arithmetic number, because the mean of its divisors is an integer number (9585).

2¹²⁴⁵²⁰ is an apocalyptic number.

124520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 124520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153360).

124520 is an abundant number, since it is smaller than the sum of its proper divisors (182200).

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

124520 is a wasteful number, since it uses less digits than its factorization.

124520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 124520 is about 352.8739151595. The cubic root of 124520 is about 49.9359179048.

Adding to 124520 its reverse (25421), we get a palindrome (149941).

Subtracting from 124520 its reverse (25421), we obtain a palindrome (99099).

The spelling of 124520 in words is "one hundred twenty-four thousand, five hundred twenty".