124045020 has 120 divisors (see below), whose sum is σ = 424570608. Its totient is φ = 30067200.

The previous prime is 124044989. The next prime is 124045021. The reversal of 124045020 is 20540421.

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 = 124044984 and 124045002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124045021) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14340 + ... + 21300.

Almost surely, 2^124045020 is an apocalyptic number.

124045020 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 124045020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212285304).

124045020 is an abundant number, since it is smaller than the sum of its proper divisors (300525588).

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

124045020 is a wasteful number, since it uses less digits than its factorization.

124045020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6993 (or 6982 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 124045020 is about 11137.5499998878. The cubic root of 124045020 is about 498.7234368803.

Adding to 124045020 its reverse (20540421), we get a palindrome (144585441).

It can be divided in two parts, 12404 and 5020, that added together give a square (17424 = 132²).

The spelling of 124045020 in words is "one hundred twenty-four million, forty-five thousand, twenty".