330421 has 8 divisors (see below), whose sum is σ = 406784. Its totient is φ = 261360.

The previous prime is 330413. The next prime is 330427. The reversal of 330421 is 124033.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 330421 - 2³ = 330413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1725 + ... + 1906.

It is an arithmetic number, because the mean of its divisors is an integer number (50848).

2³³⁰⁴²¹ is an apocalyptic number.

It is an amenable number.

330421 is a deficient number, since it is larger than the sum of its proper divisors (76363).

330421 is a wasteful number, since it uses less digits than its factorization.

330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3651.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 330421 is about 574.8225813240. The cubic root of 330421 is about 69.1336065615.

Adding to 330421 its reverse (124033), we get a palindrome (454454).

The spelling of 330421 in words is "three hundred thirty thousand, four hundred twenty-one".