135120868 has 24 divisors (see below), whose sum is σ = 239984640. Its totient is φ = 66559680.

The previous prime is 135120863. The next prime is 135120899. The reversal of 135120868 is 868021531.

It is not an unprimeable number, because it can be changed into a prime (135120863) 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 7 ways as a sum of consecutive naturals, for example, 135853 + ... + 136843.

It is an arithmetic number, because the mean of its divisors is an integer number (9999360).

Almost surely, 2^135120868 is an apocalyptic number.

It is an amenable number.

135120868 is a deficient number, since it is larger than the sum of its proper divisors (104863772).

135120868 is a wasteful number, since it uses less digits than its factorization.

135120868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1465 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 135120868 is about 11624.1502054989. The cubic root of 135120868 is about 513.1458356486.

The spelling of 135120868 in words is "one hundred thirty-five million, one hundred twenty thousand, eight hundred sixty-eight".