135123608 has 8 divisors (see below), whose sum is σ = 253356780. Its totient is φ = 67561800.

The previous prime is 135123607. The next prime is 135123613. The reversal of 135123608 is 806321531.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135123607) 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, 8445218 + ... + 8445233.

Almost surely, 2^135123608 is an apocalyptic number.

It is an amenable number.

135123608 is a deficient number, since it is larger than the sum of its proper divisors (118233172).

135123608 is a wasteful number, since it uses less digits than its factorization.

135123608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16890457 (or 16890453 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 135123608 is about 11624.2680629793. The cubic root of 135123608 is about 513.1493041730.

The spelling of 135123608 in words is "one hundred thirty-five million, one hundred twenty-three thousand, six hundred eight".