502021420 has 24 divisors (see below), whose sum is σ = 1109732400. Its totient is φ = 190239552.

The previous prime is 502021417. The next prime is 502021427. The reversal of 502021420 is 24120205.

It is a super-2 number, since 2×502021420² = 504051012277632800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 502021394 and 502021403.

It is not an unprimeable number, because it can be changed into a prime (502021427) 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, 660175 + ... + 660934.

It is an arithmetic number, because the mean of its divisors is an integer number (46238850).

Almost surely, 2^502021420 is an apocalyptic number.

It is an amenable number.

502021420 is an abundant number, since it is smaller than the sum of its proper divisors (607710980).

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

502021420 is a wasteful number, since it uses less digits than its factorization.

502021420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321137 (or 1321135 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 502021420 is about 22405.8345080026. The cubic root of 502021420 is about 794.7686892152.

Adding to 502021420 its reverse (24120205), we get a palindrome (526141625).

The spelling of 502021420 in words is "five hundred two million, twenty-one thousand, four hundred twenty".