135236242 has 8 divisors (see below), whose sum is σ = 202907196. Its totient is φ = 67600512.

The previous prime is 135236237. The next prime is 135236279. The reversal of 135236242 is 242632531.

It can be written as a sum of positive squares in 2 ways, for example, as 135233641 + 2601 = 11629^2 + 51^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 135236242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5338 + ... + 17290.

Almost surely, 2^135236242 is an apocalyptic number.

135236242 is a deficient number, since it is larger than the sum of its proper divisors (67670954).

135236242 is a wasteful number, since it uses less digits than its factorization.

135236242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17612.

The product of its digits is 8640, while the sum is 28.

The square root of 135236242 is about 11629.1118319500. Note that the first 3 decimals coincide. The cubic root of 135236242 is about 513.2918452818.

Adding to 135236242 its reverse (242632531), we get a palindrome (377868773).

The spelling of 135236242 in words is "one hundred thirty-five million, two hundred thirty-six thousand, two hundred forty-two".