135442647 has 12 divisors (see below), whose sum is σ = 200189704. Its totient is φ = 88194960.

The previous prime is 135442597. The next prime is 135442649. The reversal of 135442647 is 746244531.

135442647 is a `hidden beast` number, since 1 + 3 + 5 + 4 + 4 + 2 + 647 = 666.

It is not a de Polignac number, because 135442647 - 2¹² = 135438551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135442649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174604 + ... + 175377.

Almost surely, 2^135442647 is an apocalyptic number.

135442647 is a deficient number, since it is larger than the sum of its proper divisors (64747057).

135442647 is a wasteful number, since it uses less digits than its factorization.

135442647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350030 (or 350027 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 135442647 is about 11637.9829437923. The cubic root of 135442647 is about 513.5528506336.

The spelling of 135442647 in words is "one hundred thirty-five million, four hundred forty-two thousand, six hundred forty-seven".