135837239 has 4 divisors (see below), whose sum is σ = 135861840. Its totient is φ = 135812640.

The previous prime is 135837227. The next prime is 135837307. The reversal of 135837239 is 932738531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135837239 - 2⁸ = 135836983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135837196 and 135837205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135831239) 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 3 ways as a sum of consecutive naturals, for example, 254 + ... + 16484.

It is an arithmetic number, because the mean of its divisors is an integer number (33965460).

Almost surely, 2^135837239 is an apocalyptic number.

135837239 is a deficient number, since it is larger than the sum of its proper divisors (24601).

135837239 is an equidigital number, since it uses as much as digits as its factorization.

135837239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24600.

The product of its digits is 136080, while the sum is 41.

The square root of 135837239 is about 11654.9233802715. The cubic root of 135837239 is about 514.0510870407.

The spelling of 135837239 in words is "one hundred thirty-five million, eight hundred thirty-seven thousand, two hundred thirty-nine".