135142928 has 20 divisors (see below), whose sum is σ = 277242300. Its totient is φ = 63596544.

The previous prime is 135142897. The next prime is 135142939. The reversal of 135142928 is 829241531.

It can be written as a sum of positive squares in 2 ways, for example, as 95804944 + 39337984 = 9788^2 + 6272^2 .

It is a super-2 number, since 2×135142928² = 36527221976826368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248153 + ... + 248696.

It is an arithmetic number, because the mean of its divisors is an integer number (13862115).

Almost surely, 2^135142928 is an apocalyptic number.

It is an amenable number.

135142928 is an abundant number, since it is smaller than the sum of its proper divisors (142099372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135142928 is a wasteful number, since it uses less digits than its factorization.

135142928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496874 (or 496868 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 135142928 is about 11625.0990533414. The cubic root of 135142928 is about 513.1737597369.

The spelling of 135142928 in words is "one hundred thirty-five million, one hundred forty-two thousand, nine hundred twenty-eight".