124004220 has 48 divisors (see below), whose sum is σ = 349536768. Its totient is φ = 32846400.

The previous prime is 124004191. The next prime is 124004227. The reversal of 124004220 is 22400421.

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

It is a self number, because there is not a number n which added to its sum of digits gives 124004220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124004227) 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, 2217 + ... + 15903.

It is an arithmetic number, because the mean of its divisors is an integer number (7282016).

Almost surely, 2^124004220 is an apocalyptic number.

124004220 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 124004220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174768384).

124004220 is an abundant number, since it is smaller than the sum of its proper divisors (225532548).

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

124004220 is a wasteful number, since it uses less digits than its factorization.

124004220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13850 (or 13848 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 124004220 is about 11135.7182076416. The cubic root of 124004220 is about 498.6687520367.

Adding to 124004220 its reverse (22400421), we get a palindrome (146404641).

The spelling of 124004220 in words is "one hundred twenty-four million, four thousand, two hundred twenty".