132805 has 4 divisors (see below), whose sum is σ = 159372. Its totient is φ = 106240.

The previous prime is 132763. The next prime is 132817. The reversal of 132805 is 508231.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 83521 + 49284 = 289^2 + 222^2 .

It is not a de Polignac number, because 132805 - 2¹⁷ = 1733 is a prime.

It is an Ulam number.

It is a Duffinian number.

132805 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13276 + ... + 13285.

It is an arithmetic number, because the mean of its divisors is an integer number (39843).

2¹³²⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

132805 is a deficient number, since it is larger than the sum of its proper divisors (26567).

132805 is an equidigital number, since it uses as much as digits as its factorization.

132805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26566.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 132805 is about 364.4242033674. The cubic root of 132805 is about 51.0197283665.

The spelling of 132805 in words is "one hundred thirty-two thousand, eight hundred five".