402230521 has 8 divisors (see below), whose sum is σ = 501482304. Its totient is φ = 313426320.

The previous prime is 402230503. The next prime is 402230531. The reversal of 402230521 is 125032204.

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 402230521 - 2⁹ = 402230009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402230531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2611810 + ... + 2611963.

It is an arithmetic number, because the mean of its divisors is an integer number (62685288).

Almost surely, 2^402230521 is an apocalyptic number.

It is an amenable number.

402230521 is a deficient number, since it is larger than the sum of its proper divisors (99251783).

402230521 is a wasteful number, since it uses less digits than its factorization.

402230521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5223791.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 402230521 is about 20055.6855031186. The cubic root of 402230521 is about 738.1733135110.

Adding to 402230521 its reverse (125032204), we get a palindrome (527262725).

It can be divided in two parts, 4022 and 30521, that added together give a palindrome (34543).

The spelling of 402230521 in words is "four hundred two million, two hundred thirty thousand, five hundred twenty-one".