202330421 has 4 divisors (see below), whose sum is σ = 202400844. Its totient is φ = 202260000.

The previous prime is 202330409. The next prime is 202330423. The reversal of 202330421 is 124033202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124033202 = 2 ⋅62016601.

It can be written as a sum of positive squares in 2 ways, for example, as 116100625 + 86229796 = 10775^2 + 9286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202330421 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 202330421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202330423) 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, 30710 + ... + 36711.

It is an arithmetic number, because the mean of its divisors is an integer number (50600211).

Almost surely, 2^202330421 is an apocalyptic number.

It is an amenable number.

202330421 is a deficient number, since it is larger than the sum of its proper divisors (70423).

202330421 is an equidigital number, since it uses as much as digits as its factorization.

202330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70422.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 202330421 is about 14224.2898241002. The cubic root of 202330421 is about 587.0661795722.

Adding to 202330421 its reverse (124033202), we get a palindrome (326363623).

The spelling of 202330421 in words is "two hundred two million, three hundred thirty thousand, four hundred twenty-one".