It is a happy number.
136441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
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: 144631 = 61 ⋅2371.
It is a cyclic number.
It is a Duffinian number.
It is a congruent number.
2136441 is an apocalyptic number.
It is an amenable number.
136441 is an equidigital number, since it uses as much as digits as its factorization.
136441 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2950.
The square root of 136441 is about 369.3792089439. The cubic root of 136441 is about 51.4811568982.
The spelling of 136441 in words is "one hundred thirty-six thousand, four hundred forty-one".