135091043 has 4 divisors (see below), whose sum is σ = 136154880. Its totient is φ = 134027208.

The previous prime is 135091039. The next prime is 135091063. The reversal of 135091043 is 340190531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135091043 - 2² = 135091039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135091013) 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, 531728 + ... + 531981.

It is an arithmetic number, because the mean of its divisors is an integer number (34038720).

Almost surely, 2^135091043 is an apocalyptic number.

135091043 is a deficient number, since it is larger than the sum of its proper divisors (1063837).

135091043 is a wasteful number, since it uses less digits than its factorization.

135091043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063836.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 135091043 is about 11622.8672452197. The cubic root of 135091043 is about 513.1080776004.

The spelling of 135091043 in words is "one hundred thirty-five million, ninety-one thousand, forty-three".