135139995 has 20 divisors (see below), whose sum is σ = 242251680. Its totient is φ = 72074448.

The previous prime is 135139981. The next prime is 135139997. The reversal of 135139995 is 599931531.

It is a happy number.

It is not a de Polignac number, because 135139995 - 2⁷ = 135139867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 135139995.

It is not an unprimeable number, because it can be changed into a prime (135139997) 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 19 ways as a sum of consecutive naturals, for example, 166435 + ... + 167244.

It is an arithmetic number, because the mean of its divisors is an integer number (12112584).

Almost surely, 2^135139995 is an apocalyptic number.

135139995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

135139995 is a deficient number, since it is larger than the sum of its proper divisors (107111685).

135139995 is an equidigital number, since it uses as much as digits as its factorization.

135139995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333696 (or 333687 counting only the distinct ones).

The product of its digits is 164025, while the sum is 45.

The square root of 135139995 is about 11624.9729031942. The cubic root of 135139995 is about 513.1700472488.

The spelling of 135139995 in words is "one hundred thirty-five million, one hundred thirty-nine thousand, nine hundred ninety-five".