132120191 has 4 divisors (see below), whose sum is σ = 150994512. Its totient is φ = 113245872.

The previous prime is 132120187. The next prime is 132120193. The reversal of 132120191 is 191021231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 132120191 - 2² = 132120187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132120193) 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, 9437150 + ... + 9437163.

It is an arithmetic number, because the mean of its divisors is an integer number (37748628).

Almost surely, 2^132120191 is an apocalyptic number.

132120191 is a deficient number, since it is larger than the sum of its proper divisors (18874321).

132120191 is an equidigital number, since it uses as much as digits as its factorization.

132120191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18874320.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 132120191 is about 11494.3547448302. The cubic root of 132120191 is about 509.3188278906.

It can be divided in two parts, 1321 and 20191, that added together give a palindrome (21512).

The spelling of 132120191 in words is "one hundred thirty-two million, one hundred twenty thousand, one hundred ninety-one".