124560020 has 48 divisors (see below), whose sum is σ = 298278288. Its totient is φ = 43284480.

The previous prime is 124559983. The next prime is 124560043. The reversal of 124560020 is 20065421.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1926544 + 122633476 = 1388^2 + 11074^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 124559974 and 124560001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9671 + ... + 18510.

It is an arithmetic number, because the mean of its divisors is an integer number (6214131).

Almost surely, 2^124560020 is an apocalyptic number.

124560020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124560020 is an abundant number, since it is smaller than the sum of its proper divisors (173718268).

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

124560020 is a wasteful number, since it uses less digits than its factorization.

124560020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28220 (or 28218 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 124560020 is about 11160.6460386485. The cubic root of 124560020 is about 499.4126703579.

The spelling of 124560020 in words is "one hundred twenty-four million, five hundred sixty thousand, twenty".