135136244 has 6 divisors (see below), whose sum is σ = 236488434. Its totient is φ = 67568120.

The previous prime is 135136219. The next prime is 135136249. The reversal of 135136244 is 442631531.

It can be written as a sum of positive squares in only one way, i.e., 86304100 + 48832144 = 9290^2 + 6988^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135136249) 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 as a sum of consecutive naturals, namely, 16892027 + ... + 16892034.

It is an arithmetic number, because the mean of its divisors is an integer number (39414739).

Almost surely, 2^135136244 is an apocalyptic number.

It is an amenable number.

135136244 is a deficient number, since it is larger than the sum of its proper divisors (101352190).

135136244 is a wasteful number, since it uses less digits than its factorization.

135136244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33784065 (or 33784063 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 135136244 is about 11624.8115683653. The cubic root of 135136244 is about 513.1652992869.

Adding to 135136244 its reverse (442631531), we get a palindrome (577767775).

The spelling of 135136244 in words is "one hundred thirty-five million, one hundred thirty-six thousand, two hundred forty-four".