124920 has 48 divisors (see below), whose sum is σ = 407160. Its totient is φ = 33216.

The previous prime is 124919. The next prime is 124951. The reversal of 124920 is 29421.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 124893 and 124902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187 + ... + 533.

2¹²⁴⁹²⁰ is an apocalyptic number.

124920 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 124920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203580).

124920 is an abundant number, since it is smaller than the sum of its proper divisors (282240).

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

124920 is a wasteful number, since it uses less digits than its factorization.

124920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 124920 is about 353.4402354006. The cubic root of 124920 is about 49.9893310570.

The spelling of 124920 in words is "one hundred twenty-four thousand, nine hundred twenty".