132405321 has 4 divisors (see below), whose sum is σ = 176540432. Its totient is φ = 88270212.

The previous prime is 132405313. The next prime is 132405323. The reversal of 132405321 is 123504231.

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.

It is not a de Polignac number, because 132405321 - 2³ = 132405313 is a prime.

It is a super-2 number, since 2×132405321² = 35062338058226082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132405323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22067551 + ... + 22067556.

It is an arithmetic number, because the mean of its divisors is an integer number (44135108).

Almost surely, 2^132405321 is an apocalyptic number.

It is an amenable number.

132405321 is a deficient number, since it is larger than the sum of its proper divisors (44135111).

132405321 is an equidigital number, since it uses as much as digits as its factorization.

132405321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44135110.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 132405321 is about 11506.7511053294. The cubic root of 132405321 is about 509.6849534437.

Adding to 132405321 its reverse (123504231), we get a palindrome (255909552).

The spelling of 132405321 in words is "one hundred thirty-two million, four hundred five thousand, three hundred twenty-one".