135099 has 12 divisors (see below), whose sum is σ = 206856. Its totient is φ = 84672.

The previous prime is 135089. The next prime is 135101. The reversal of 135099 is 990531.

135099 = T₄₂ + T₄₃ + ... + T₉₅.

It is not a de Polignac number, because 135099 - 2⁹ = 134587 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (135019) 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 in 11 ways as a sum of consecutive naturals, for example, 289 + ... + 594.

It is an arithmetic number, because the mean of its divisors is an integer number (17238).

2¹³⁵⁰⁹⁹ is an apocalyptic number.

135099 is a deficient number, since it is larger than the sum of its proper divisors (71757).

135099 is a wasteful number, since it uses less digits than its factorization.

135099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 135099 is about 367.5581586634. The cubic root of 135099 is about 51.3118151599.

The spelling of 135099 in words is "one hundred thirty-five thousand, ninety-nine".