135242787 has 8 divisors (see below), whose sum is σ = 180741904. Its totient is φ = 89952768.

The previous prime is 135242759. The next prime is 135242791. The reversal of 135242787 is 787242531.

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

It is not a de Polignac number, because 135242787 - 2²² = 131048483 is a prime.

It is a super-2 number, since 2×135242787² = 36581222871054738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135242087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50758 + ... + 53355.

It is an arithmetic number, because the mean of its divisors is an integer number (22592738).

Almost surely, 2^135242787 is an apocalyptic number.

135242787 is a deficient number, since it is larger than the sum of its proper divisors (45499117).

135242787 is a wasteful number, since it uses less digits than its factorization.

135242787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104549.

The product of its digits is 94080, while the sum is 39.

The square root of 135242787 is about 11629.3932343867. The cubic root of 135242787 is about 513.3001257074.

The spelling of 135242787 in words is "one hundred thirty-five million, two hundred forty-two thousand, seven hundred eighty-seven".