332421 has 4 divisors (see below), whose sum is σ = 443232. Its totient is φ = 221612.

The previous prime is 332417. The next prime is 332441. The reversal of 332421 is 124233.

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, and also an emirpimes, since its reverse is a distinct semiprime: 124233 = 3 ⋅41411.

It is a cyclic number.

It is not a de Polignac number, because 332421 - 2² = 332417 is a prime.

It is a super-2 number, since 2×332421² = 221007442482, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

332421 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 332421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (332411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55401 + ... + 55406.

It is an arithmetic number, because the mean of its divisors is an integer number (110808).

2³³²⁴²¹ is an apocalyptic number.

It is an amenable number.

332421 is a deficient number, since it is larger than the sum of its proper divisors (110811).

332421 is a wasteful number, since it uses less digits than its factorization.

332421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110810.

The product of its digits is 144, while the sum is 15.

The square root of 332421 is about 576.5596239766. The cubic root of 332421 is about 69.2728119748.

Adding to 332421 its reverse (124233), we get a palindrome (456654).

The spelling of 332421 in words is "three hundred thirty-two thousand, four hundred twenty-one".