530232421 has 4 divisors (see below), whose sum is σ = 530922700. Its totient is φ = 529542144.

The previous prime is 530232413. The next prime is 530232457. The reversal of 530232421 is 124232035.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 213890625 + 316341796 = 14625^2 + 17786^2 .

It is a cyclic number.

It is not a de Polignac number, because 530232421 - 2³ = 530232413 is a prime.

It is a super-2 number, since 2×530232421² = 562292840559042482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 530232392 and 530232401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530232481) 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 3 ways as a sum of consecutive naturals, for example, 343986 + ... + 345523.

It is an arithmetic number, because the mean of its divisors is an integer number (132730675).

Almost surely, 2^530232421 is an apocalyptic number.

It is an amenable number.

530232421 is a deficient number, since it is larger than the sum of its proper divisors (690279).

530232421 is an equidigital number, since it uses as much as digits as its factorization.

530232421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690278.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 530232421 is about 23026.7761747058. The cubic root of 530232421 is about 809.3855122063.

Adding to 530232421 its reverse (124232035), we get a palindrome (654464456).

The spelling of 530232421 in words is "five hundred thirty million, two hundred thirty-two thousand, four hundred twenty-one".