132781 has 4 divisors (see below), whose sum is σ = 144864. Its totient is φ = 120700.

The previous prime is 132763. The next prime is 132817. The reversal of 132781 is 187231.

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, and also an emirpimes, since its reverse is a distinct semiprime: 187231 = 11 ⋅17021.

It is a cyclic number.

It is not a de Polignac number, because 132781 - 2⁵ = 132749 is a prime.

It is a super-2 number, since 2×132781² = 35261587922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132701) 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, 6025 + ... + 6046.

It is an arithmetic number, because the mean of its divisors is an integer number (36216).

2¹³²⁷⁸¹ is an apocalyptic number.

132781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

132781 is a deficient number, since it is larger than the sum of its proper divisors (12083).

132781 is a wasteful number, since it uses less digits than its factorization.

132781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12082.

The product of its digits is 336, while the sum is 22.

The square root of 132781 is about 364.3912732215. The cubic root of 132781 is about 51.0166548194.

The spelling of 132781 in words is "one hundred thirty-two thousand, seven hundred eighty-one".