132920321 has 2 divisors, whose sum is σ = 132920322. Its totient is φ = 132920320.

The previous prime is 132920273. The next prime is 132920323. The reversal of 132920321 is 123029231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94789696 + 38130625 = 9736^2 + 6175^2 .

It is a cyclic number.

It is not a de Polignac number, because 132920321 - 2¹⁸ = 132658177 is a prime.

It is a Sophie Germain prime.

Together with 132920323, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (132920323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66460160 + 66460161.

It is an arithmetic number, because the mean of its divisors is an integer number (66460161).

Almost surely, 2^132920321 is an apocalyptic number.

It is an amenable number.

132920321 is a deficient number, since it is larger than the sum of its proper divisors (1).

132920321 is an equidigital number, since it uses as much as digits as its factorization.

132920321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 132920321 is about 11529.1075543600. The cubic root of 132920321 is about 510.3449172601.

Adding to 132920321 its reverse (123029231), we get a palindrome (255949552).

The spelling of 132920321 in words is "one hundred thirty-two million, nine hundred twenty thousand, three hundred twenty-one".