135142285 has 8 divisors (see below), whose sum is σ = 162406296. Its totient is φ = 107956800.

The previous prime is 135142279. The next prime is 135142297. The reversal of 135142285 is 582241531.

It can be written as a sum of positive squares in 4 ways, for example, as 24029604 + 111112681 = 4902^2 + 10541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135142285 - 2¹⁵ = 135109517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15774 + ... + 22783.

It is an arithmetic number, because the mean of its divisors is an integer number (20300787).

Almost surely, 2^135142285 is an apocalyptic number.

It is an amenable number.

135142285 is a deficient number, since it is larger than the sum of its proper divisors (27264011).

135142285 is an equidigital number, since it uses as much as digits as its factorization.

135142285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39263.

The product of its digits is 9600, while the sum is 31.

The square root of 135142285 is about 11625.0713976302. The cubic root of 135142285 is about 513.1729458547.

The spelling of 135142285 in words is "one hundred thirty-five million, one hundred forty-two thousand, two hundred eighty-five".