135542232 has 144 divisors (see below), whose sum is σ = 432329040. Its totient is φ = 38247552.

The previous prime is 135542227. The next prime is 135542233. The reversal of 135542232 is 232245531.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 135542196 and 135542205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135542233) 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 35 ways as a sum of consecutive naturals, for example, 363198 + ... + 363570.

It is an arithmetic number, because the mean of its divisors is an integer number (3002285).

Almost surely, 2^135542232 is an apocalyptic number.

135542232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135542232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216164520).

135542232 is an abundant number, since it is smaller than the sum of its proper divisors (296786808).

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

135542232 is a wasteful number, since it uses less digits than its factorization.

135542232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 488 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 135542232 is about 11642.2606052261. The cubic root of 135542232 is about 513.6786840465.

Adding to 135542232 its reverse (232245531), we get a palindrome (367787763).

The spelling of 135542232 in words is "one hundred thirty-five million, five hundred forty-two thousand, two hundred thirty-two".