135278727 has 8 divisors (see below), whose sum is σ = 189864960. Its totient is φ = 85439160.

The previous prime is 135278723. The next prime is 135278729. The reversal of 135278727 is 727872531.

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

It is not a de Polignac number, because 135278727 - 2² = 135278723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135278723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1186599 + ... + 1186712.

It is an arithmetic number, because the mean of its divisors is an integer number (23733120).

Almost surely, 2^135278727 is an apocalyptic number.

135278727 is a deficient number, since it is larger than the sum of its proper divisors (54586233).

135278727 is a wasteful number, since it uses less digits than its factorization.

135278727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373333.

The product of its digits is 164640, while the sum is 42.

The square root of 135278727 is about 11630.9383542344. The cubic root of 135278727 is about 513.3455905415.

The spelling of 135278727 in words is "one hundred thirty-five million, two hundred seventy-eight thousand, seven hundred twenty-seven".