135641436 has 144 divisors (see below), whose sum is σ = 400409856. Its totient is φ = 34868736.

The previous prime is 135641431. The next prime is 135641449. The reversal of 135641436 is 634146531.

It is a junction number, because it is equal to n+sod(n) for n = 135641397 and 135641406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135641431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2885965 + ... + 2886011.

It is an arithmetic number, because the mean of its divisors is an integer number (2780624).

Almost surely, 2^135641436 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 135641436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200204928).

135641436 is an abundant number, since it is smaller than the sum of its proper divisors (264768420).

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

135641436 is a wasteful number, since it uses less digits than its factorization.

135641436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 119 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 135641436 is about 11646.5203387106. The cubic root of 135641436 is about 513.8039747698.

Adding to 135641436 its reverse (634146531), we get a palindrome (769787967).

The spelling of 135641436 in words is "one hundred thirty-five million, six hundred forty-one thousand, four hundred thirty-six".