135256099 has 6 divisors (see below), whose sum is σ = 148670060. Its totient is φ = 122959980.

The previous prime is 135256081. The next prime is 135256109. The reversal of 135256099 is 990652531.

It is a happy number.

It is not a de Polignac number, because 135256099 - 2¹¹ = 135254051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135256019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 558789 + ... + 559030.

Almost surely, 2^135256099 is an apocalyptic number.

135256099 is a deficient number, since it is larger than the sum of its proper divisors (13413961).

135256099 is a wasteful number, since it uses less digits than its factorization.

135256099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117841 (or 1117830 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 135256099 is about 11629.9655631476. The cubic root of 135256099 is about 513.3169665984.

The spelling of 135256099 in words is "one hundred thirty-five million, two hundred fifty-six thousand, ninety-nine".