124043220 has 144 divisors (see below), whose sum is σ = 455390208. Its totient is φ = 26680320.

The previous prime is 124043219. The next prime is 124043233. The reversal of 124043220 is 22340421.

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

It is a junction number, because it is equal to n+sod(n) for n = 124043193 and 124043202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18525 + ... + 24315.

It is an arithmetic number, because the mean of its divisors is an integer number (3162432).

Almost surely, 2^124043220 is an apocalyptic number.

124043220 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 124043220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227695104).

124043220 is an abundant number, since it is smaller than the sum of its proper divisors (331346988).

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

124043220 is a wasteful number, since it uses less digits than its factorization.

124043220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5830 (or 5825 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 124043220 is about 11137.4691918766. The cubic root of 124043220 is about 498.7210245665.

Adding to 124043220 its reverse (22340421), we get a palindrome (146383641).

The spelling of 124043220 in words is "one hundred twenty-four million, forty-three thousand, two hundred twenty".