330342421 has 2 divisors, whose sum is σ = 330342422. Its totient is φ = 330342420.

The previous prime is 330342377. The next prime is 330342433. The reversal of 330342421 is 124243033.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294808900 + 35533521 = 17170^2 + 5961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-330342421 is a prime.

It is a super-2 number, since 2×330342421² = 218252230224282482, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 330342392 and 330342401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (330343421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165171210 + 165171211.

It is an arithmetic number, because the mean of its divisors is an integer number (165171211).

Almost surely, 2^330342421 is an apocalyptic number.

It is an amenable number.

330342421 is a deficient number, since it is larger than the sum of its proper divisors (1).

330342421 is an equidigital number, since it uses as much as digits as its factorization.

330342421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 330342421 is about 18175.3245087949. The cubic root of 330342421 is about 691.2812579565.

Adding to 330342421 its reverse (124243033), we get a palindrome (454585454).

The spelling of 330342421 in words is "three hundred thirty million, three hundred forty-two thousand, four hundred twenty-one".