136613242 has 4 divisors (see below), whose sum is σ = 204919866. Its totient is φ = 68306620.

The previous prime is 136613227. The next prime is 136613293. The reversal of 136613242 is 242316631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242316631 = 47 ⋅5155673.

It can be written as a sum of positive squares in only one way, i.e., 72437121 + 64176121 = 8511^2 + 8011^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 136613242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34153309 + ... + 34153312.

Almost surely, 2^136613242 is an apocalyptic number.

136613242 is a deficient number, since it is larger than the sum of its proper divisors (68306624).

136613242 is an equidigital number, since it uses as much as digits as its factorization.

136613242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68306623.

The product of its digits is 5184, while the sum is 28.

The square root of 136613242 is about 11688.1667510350. The cubic root of 136613242 is about 515.0281091893.

Adding to 136613242 its reverse (242316631), we get a palindrome (378929873).

The spelling of 136613242 in words is "one hundred thirty-six million, six hundred thirteen thousand, two hundred forty-two".