135442216 has 64 divisors (see below), whose sum is σ = 326188800. Its totient is φ = 51245568.

The previous prime is 135442211. The next prime is 135442231. The reversal of 135442216 is 612244531.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (135442211) 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 15 ways as a sum of consecutive naturals, for example, 12700 + ... + 20788.

It is an arithmetic number, because the mean of its divisors is an integer number (5096700).

Almost surely, 2^135442216 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 135442216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163094400).

135442216 is an abundant number, since it is smaller than the sum of its proper divisors (190746584).

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

135442216 is a wasteful number, since it uses less digits than its factorization.

135442216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8138 (or 8134 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 135442216 is about 11637.9644268231. The cubic root of 135442216 is about 513.5523058975.

Adding to 135442216 its reverse (612244531), we get a palindrome (747686747).

The spelling of 135442216 in words is "one hundred thirty-five million, four hundred forty-two thousand, two hundred sixteen".