8230421 has 4 divisors (see below), whose sum is σ = 8310432. Its totient is φ = 8150412.

The previous prime is 8230399. The next prime is 8230427. The reversal of 8230421 is 1240328.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8230421 - 2⁶ = 8230357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8230393 and 8230402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8230427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39851 + ... + 40056.

It is an arithmetic number, because the mean of its divisors is an integer number (2077608).

Almost surely, 2^8230421 is an apocalyptic number.

It is an amenable number.

8230421 is a deficient number, since it is larger than the sum of its proper divisors (80011).

8230421 is a wasteful number, since it uses less digits than its factorization.

8230421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80010.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 8230421 is about 2868.8710323052. The cubic root of 8230421 is about 201.9020290851.

Adding to 8230421 its reverse (1240328), we get a palindrome (9470749).

It can be divided in two parts, 82 and 30421, that added together give a palindrome (30503).

The spelling of 8230421 in words is "eight million, two hundred thirty thousand, four hundred twenty-one".