135943975 has 24 divisors (see below), whose sum is σ = 173703168. Its totient is φ = 105487200.

The previous prime is 135943949. The next prime is 135943979. The reversal of 135943975 is 579349531.

It is not a de Polignac number, because 135943975 - 2⁵ = 135943943 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 (135943979) 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 23 ways as a sum of consecutive naturals, for example, 148770 + ... + 149680.

It is an arithmetic number, because the mean of its divisors is an integer number (7237632).

Almost surely, 2^135943975 is an apocalyptic number.

135943975 is a deficient number, since it is larger than the sum of its proper divisors (37759193).

135943975 is a wasteful number, since it uses less digits than its factorization.

135943975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095 (or 1090 counting only the distinct ones).

The product of its digits is 510300, while the sum is 46.

The square root of 135943975 is about 11659.5014902010. The cubic root of 135943975 is about 514.1856927214.

The spelling of 135943975 in words is "one hundred thirty-five million, nine hundred forty-three thousand, nine hundred seventy-five".