135242865 has 48 divisors (see below), whose sum is σ = 246355200. Its totient is φ = 71165952.

The previous prime is 135242791. The next prime is 135242873. The reversal of 135242865 is 568242531.

It is not a de Polignac number, because 135242865 - 2⁸ = 135242609 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95281 + ... + 96689.

It is an arithmetic number, because the mean of its divisors is an integer number (5132400).

Almost surely, 2^135242865 is an apocalyptic number.

135242865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135242865 is a deficient number, since it is larger than the sum of its proper divisors (111112335).

135242865 is an equidigital number, since it uses as much as digits as its factorization.

135242865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508 (or 1496 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 135242865 is about 11629.3965879576. The cubic root of 135242865 is about 513.3002243877.

The spelling of 135242865 in words is "one hundred thirty-five million, two hundred forty-two thousand, eight hundred sixty-five".