332440421 has 4 divisors (see below), whose sum is σ = 332607744. Its totient is φ = 332273100.

The previous prime is 332440391. The next prime is 332440429. The reversal of 332440421 is 124044233.

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: 124044233 = 47 ⋅2639239.

It is a cyclic number.

It is not a de Polignac number, because 332440421 - 2⁶ = 332440357 is a prime.

It is a super-2 number, since 2×332440421² = 221033267029314482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (332440429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80645 + ... + 84666.

It is an arithmetic number, because the mean of its divisors is an integer number (83151936).

Almost surely, 2^332440421 is an apocalyptic number.

It is an amenable number.

332440421 is a deficient number, since it is larger than the sum of its proper divisors (167323).

332440421 is a wasteful number, since it uses less digits than its factorization.

332440421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167322.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 332440421 is about 18232.9487741287. The cubic root of 332440421 is about 692.7416098815.

Adding to 332440421 its reverse (124044233), we get a palindrome (456484654).

The spelling of 332440421 in words is "three hundred thirty-two million, four hundred forty thousand, four hundred twenty-one".