135721594 has 8 divisors (see below), whose sum is σ = 207033120. Its totient is φ = 66710556.

The previous prime is 135721577. The next prime is 135721601. The reversal of 135721594 is 495127531.

135721594 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574974 + ... + 575209.

It is an arithmetic number, because the mean of its divisors is an integer number (25879140).

Almost surely, 2^135721594 is an apocalyptic number.

135721594 is a deficient number, since it is larger than the sum of its proper divisors (71311526).

135721594 is a wasteful number, since it uses less digits than its factorization.

135721594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150244.

The product of its digits is 37800, while the sum is 37.

The square root of 135721594 is about 11649.9611158149. The cubic root of 135721594 is about 513.9051665343.

The spelling of 135721594 in words is "one hundred thirty-five million, seven hundred twenty-one thousand, five hundred ninety-four".