502124420 has 48 divisors (see below), whose sum is σ = 1206670080. Its totient is φ = 171932544.

The previous prime is 502124401. The next prime is 502124443. The reversal of 502124420 is 24421205.

It is a happy number.

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 = 502124392 and 502124401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133526 + ... + 137234.

It is an arithmetic number, because the mean of its divisors is an integer number (25138960).

Almost surely, 2^502124420 is an apocalyptic number.

It is an amenable number.

502124420 is an abundant number, since it is smaller than the sum of its proper divisors (704545660).

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

502124420 is a wasteful number, since it uses less digits than its factorization.

502124420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4692 (or 4690 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 502124420 is about 22408.1328985706. The cubic root of 502124420 is about 794.8230398690.

Adding to 502124420 its reverse (24421205), we get a palindrome (526545625).

The spelling of 502124420 in words is "five hundred two million, one hundred twenty-four thousand, four hundred twenty".