135905141 has 4 divisors (see below), whose sum is σ = 135957984. Its totient is φ = 135852300.

The previous prime is 135905131. The next prime is 135905149. The reversal of 135905141 is 141509531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 141509531 = 29 ⋅4879639.

It is a cyclic number.

It is not a de Polignac number, because 135905141 - 2¹⁴ = 135888757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135905149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22355 + ... + 27776.

It is an arithmetic number, because the mean of its divisors is an integer number (33989496).

Almost surely, 2^135905141 is an apocalyptic number.

It is an amenable number.

135905141 is a deficient number, since it is larger than the sum of its proper divisors (52843).

135905141 is an equidigital number, since it uses as much as digits as its factorization.

135905141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52842.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 135905141 is about 11657.8360341875. The cubic root of 135905141 is about 514.1367269892.

The spelling of 135905141 in words is "one hundred thirty-five million, nine hundred five thousand, one hundred forty-one".