230242021 has 4 divisors (see below), whose sum is σ = 232829100. Its totient is φ = 227654944.

The previous prime is 230242007. The next prime is 230242039. The reversal of 230242021 is 120242032.

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 29311396 + 200930625 = 5414^2 + 14175^2 .

It is a cyclic number.

It is not a de Polignac number, because 230242021 - 2⁵ = 230241989 is a prime.

It is a super-2 number, since 2×230242021² = 106022776468328882, 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 = 230241986 and 230242004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230242091) 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, 1293406 + ... + 1293583.

It is an arithmetic number, because the mean of its divisors is an integer number (58207275).

Almost surely, 2^230242021 is an apocalyptic number.

It is an amenable number.

230242021 is a deficient number, since it is larger than the sum of its proper divisors (2587079).

230242021 is an equidigital number, since it uses as much as digits as its factorization.

230242021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587078.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 230242021 is about 15173.7279862267. The cubic root of 230242021 is about 612.9073972138.

Adding to 230242021 its reverse (120242032), we get a palindrome (350484053).

The spelling of 230242021 in words is "two hundred thirty million, two hundred forty-two thousand, twenty-one".