136257 has 8 divisors (see below), whose sum is σ = 198240. Its totient is φ = 82560.

The previous prime is 136247. The next prime is 136261. The reversal of 136257 is 752631.

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

It is not a de Polignac number, because 136257 - 2⁶ = 136193 is a prime.

136257 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 136257.

It is not an unprimeable number, because it can be changed into a prime (136207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2032 + ... + 2097.

It is an arithmetic number, because the mean of its divisors is an integer number (24780).

2¹³⁶²⁵⁷ is an apocalyptic number.

It is an amenable number.

136257 is a deficient number, since it is larger than the sum of its proper divisors (61983).

136257 is a wasteful number, since it uses less digits than its factorization.

136257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4143.

The product of its digits is 1260, while the sum is 24.

The square root of 136257 is about 369.1300583805. The cubic root of 136257 is about 51.4580045364.

Adding to 136257 its reverse (752631), we get a palindrome (888888).

It can be divided in two parts, 136 and 257, that added together give a palindrome (393).

The spelling of 136257 in words is "one hundred thirty-six thousand, two hundred fifty-seven".