135782 has 4 divisors (see below), whose sum is σ = 203676. Its totient is φ = 67890.

The previous prime is 135781. The next prime is 135787. The reversal of 135782 is 287531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 287531 = 271 ⋅1061.

It is a d-powerful number, because it can be written as 1 + 3⁷ + 7⁶ + 5⁶ + 8² + 2⁸ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135781) by changing a digit.

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 as a sum of consecutive naturals, namely, 33944 + ... + 33947.

It is an arithmetic number, because the mean of its divisors is an integer number (50919).

2¹³⁵⁷⁸² is an apocalyptic number.

135782 is a deficient number, since it is larger than the sum of its proper divisors (67894).

135782 is an equidigital number, since it uses as much as digits as its factorization.

135782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67893.

The product of its digits is 1680, while the sum is 26.

The square root of 135782 is about 368.4860920035. The cubic root of 135782 is about 51.3981396976.

It can be divided in two parts, 135 and 782, that multiplied together give a triangular number (105570 = T₄₅₉).

The spelling of 135782 in words is "one hundred thirty-five thousand, seven hundred eighty-two".