135111252 has 24 divisors (see below), whose sum is σ = 315507136. Its totient is φ = 45001728.

The previous prime is 135111227. The next prime is 135111259. The reversal of 135111252 is 252111531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135111259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14868 + ... + 22164.

Almost surely, 2^135111252 is an apocalyptic number.

135111252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135111252 is an abundant number, since it is smaller than the sum of its proper divisors (180395884).

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

135111252 is a wasteful number, since it uses less digits than its factorization.

135111252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8847 (or 8845 counting only the distinct ones).

The product of its digits is 300, while the sum is 21.

The square root of 135111252 is about 11623.7365765059. The cubic root of 135111252 is about 513.1336625291.

Adding to 135111252 its reverse (252111531), we get a palindrome (387222783).

The spelling of 135111252 in words is "one hundred thirty-five million, one hundred eleven thousand, two hundred fifty-two".