135236 has 6 divisors (see below), whose sum is σ = 236670. Its totient is φ = 67616.

The previous prime is 135221. The next prime is 135241. The reversal of 135236 is 632531.

It can be written as a sum of positive squares in only one way, i.e., 118336 + 16900 = 344^2 + 130^2 .

It is an unprimeable number.

135236 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16901 + ... + 16908.

It is an arithmetic number, because the mean of its divisors is an integer number (39445).

2¹³⁵²³⁶ is an apocalyptic number.

It is an amenable number.

135236 is a deficient number, since it is larger than the sum of its proper divisors (101434).

135236 is a wasteful number, since it uses less digits than its factorization.

135236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33813 (or 33811 counting only the distinct ones).

The product of its digits is 540, while the sum is 20.

The square root of 135236 is about 367.7444765051. The cubic root of 135236 is about 51.3291539110.

Adding to 135236 its reverse (632531), we get a palindrome (767767).

The spelling of 135236 in words is "one hundred thirty-five thousand, two hundred thirty-six".