135242015 has 8 divisors (see below), whose sum is σ = 162501360. Its totient is φ = 108052992.

The previous prime is 135242011. The next prime is 135242033. The reversal of 135242015 is 510242531.

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

It is a cyclic number.

It is not a de Polignac number, because 135242015 - 2² = 135242011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135242011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13250 + ... + 21119.

It is an arithmetic number, because the mean of its divisors is an integer number (20312670).

Almost surely, 2^135242015 is an apocalyptic number.

135242015 is a deficient number, since it is larger than the sum of its proper divisors (27259345).

135242015 is an equidigital number, since it uses as much as digits as its factorization.

135242015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35161.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 135242015 is about 11629.3600425819. The cubic root of 135242015 is about 513.2991490233.

Adding to 135242015 its reverse (510242531), we get a palindrome (645484546).

The spelling of 135242015 in words is "one hundred thirty-five million, two hundred forty-two thousand, fifteen".