135120144 has 20 divisors (see below), whose sum is σ = 349060496. Its totient is φ = 45040032.

The previous prime is 135120143. The next prime is 135120149. The reversal of 135120144 is 441021531.

It is a self number, because there is not a number n which added to its sum of digits gives 135120144.

It is not an unprimeable number, because it can be changed into a prime (135120143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1407454 + ... + 1407549.

Almost surely, 2^135120144 is an apocalyptic number.

It is an amenable number.

135120144 is an abundant number, since it is smaller than the sum of its proper divisors (213940352).

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

135120144 is a wasteful number, since it uses less digits than its factorization.

135120144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815014 (or 2815008 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 135120144 is about 11624.1190633957. The cubic root of 135120144 is about 513.1449191401.

Adding to 135120144 its reverse (441021531), we get a palindrome (576141675).

The spelling of 135120144 in words is "one hundred thirty-five million, one hundred twenty thousand, one hundred forty-four".