124500820 has 24 divisors (see below), whose sum is σ = 261732744. Its totient is φ = 49746816.

The previous prime is 124500811. The next prime is 124500821. The reversal of 124500820 is 28005421.

It can be written as a sum of positive squares in 4 ways, for example, as 7817616 + 116683204 = 2796^2 + 10802^2 .

It is a junction number, because it is equal to n+sod(n) for n = 124500791 and 124500800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124500821) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 19554 + ... + 25126.

It is an arithmetic number, because the mean of its divisors is an integer number (10905531).

Almost surely, 2^124500820 is an apocalyptic number.

124500820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124500820 is an abundant number, since it is smaller than the sum of its proper divisors (137231924).

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

124500820 is a wasteful number, since it uses less digits than its factorization.

124500820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6699 (or 6697 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 124500820 is about 11157.9935472288. The cubic root of 124500820 is about 499.3335387201. Note that the first 3 decimals are identical.

The spelling of 124500820 in words is "one hundred twenty-four million, five hundred thousand, eight hundred twenty".