502140221 has 8 divisors (see below), whose sum is σ = 549923904. Its totient is φ = 454712320.

The previous prime is 502140217. The next prime is 502140239. The reversal of 502140221 is 122041205.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 502140221 - 2² = 502140217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 502140221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (502140211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85985 + ... + 91638.

It is an arithmetic number, because the mean of its divisors is an integer number (68740488).

Almost surely, 2^502140221 is an apocalyptic number.

It is an amenable number.

502140221 is a deficient number, since it is larger than the sum of its proper divisors (47783683).

502140221 is a wasteful number, since it uses less digits than its factorization.

502140221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177891.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 502140221 is about 22408.4854686790. The cubic root of 502140221 is about 794.8313770238.

Adding to 502140221 its reverse (122041205), we get a palindrome (624181426).

The spelling of 502140221 in words is "five hundred two million, one hundred forty thousand, two hundred twenty-one".