135004239 has 28 divisors (see below), whose sum is σ = 204391000. Its totient is φ = 89124624.

The previous prime is 135004223. The next prime is 135004241. The reversal of 135004239 is 932400531.

It is not a de Polignac number, because 135004239 - 2⁴ = 135004223 is a prime.

It is a super-2 number, since 2×135004239² = 36452289095938242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135004439) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 78612 + ... + 80310.

Almost surely, 2^135004239 is an apocalyptic number.

135004239 is a deficient number, since it is larger than the sum of its proper divisors (69386761).

135004239 is an equidigital number, since it uses as much as digits as its factorization.

135004239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826 (or 1811 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 135004239 is about 11619.1324547059. The cubic root of 135004239 is about 512.9981532713.

The spelling of 135004239 in words is "one hundred thirty-five million, four thousand, two hundred thirty-nine".