502420240 has 80 divisors (see below), whose sum is σ = 1347413760. Its totient is φ = 170657280.

The previous prime is 502420207. The next prime is 502420241. The reversal of 502420240 is 42024205.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (502420241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56925 + ... + 65155.

It is an arithmetic number, because the mean of its divisors is an integer number (16842672).

Almost surely, 2^502420240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 502420240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (673706880).

502420240 is an abundant number, since it is smaller than the sum of its proper divisors (844993520).

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

502420240 is a wasteful number, since it uses less digits than its factorization.

502420240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8360 (or 8354 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 502420240 is about 22414.7326551088. The cubic root of 502420240 is about 794.9790957414.

Adding to 502420240 its reverse (42024205), we get a palindrome (544444445).

The spelling of 502420240 in words is "five hundred two million, four hundred twenty thousand, two hundred forty".