332623421 has 4 divisors (see below), whose sum is σ = 358209852. Its totient is φ = 307036992.

The previous prime is 332623399. The next prime is 332623433. The reversal of 332623421 is 124326233.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124326233 = 47 ⋅2645239.

It can be written as a sum of positive squares in 2 ways, for example, as 42432196 + 290191225 = 6514^2 + 17035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-332623421 is a prime.

It is a super-2 number, since 2×332623421² = 221276680395486482, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (332623441) 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, 12793196 + ... + 12793221.

It is an arithmetic number, because the mean of its divisors is an integer number (89552463).

Almost surely, 2^332623421 is an apocalyptic number.

It is an amenable number.

332623421 is a deficient number, since it is larger than the sum of its proper divisors (25586431).

332623421 is a wasteful number, since it uses less digits than its factorization.

332623421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25586430.

The product of its digits is 5184, while the sum is 26.

The square root of 332623421 is about 18237.9664710735. The cubic root of 332623421 is about 692.8686987794.

Adding to 332623421 its reverse (124326233), we get a palindrome (456949654).

The spelling of 332623421 in words is "three hundred thirty-two million, six hundred twenty-three thousand, four hundred twenty-one".