135242136 has 96 divisors (see below), whose sum is σ = 385454160. Its totient is φ = 44416512.

The previous prime is 135242117. The next prime is 135242137. The reversal of 135242136 is 631242531.

135242136 is a `hidden beast` number, since 1 + 3 + 524 + 2 + 136 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135242137) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 141436 + ... + 142388.

Almost surely, 2^135242136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135242136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192727080).

135242136 is an abundant number, since it is smaller than the sum of its proper divisors (250212024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135242136 is an equidigital number, since it uses as much as digits as its factorization.

135242136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047 (or 1031 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 135242136 is about 11629.3652449306. The cubic root of 135242136 is about 513.2993021048.

Adding to 135242136 its reverse (631242531), we get a palindrome (766484667).

The spelling of 135242136 in words is "one hundred thirty-five million, two hundred forty-two thousand, one hundred thirty-six".