136241639 has 2 divisors, whose sum is σ = 136241640. Its totient is φ = 136241638.

The previous prime is 136241629. The next prime is 136241737. The reversal of 136241639 is 936142631.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (936142631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136241639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136241599 and 136241608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136241629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68120819 + 68120820.

It is an arithmetic number, because the mean of its divisors is an integer number (68120820).

Almost surely, 2^136241639 is an apocalyptic number.

136241639 is a deficient number, since it is larger than the sum of its proper divisors (1).

136241639 is an equidigital number, since it uses as much as digits as its factorization.

136241639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The square root of 136241639 is about 11672.2593785436. The cubic root of 136241639 is about 514.5607074923.

The spelling of 136241639 in words is "one hundred thirty-six million, two hundred forty-one thousand, six hundred thirty-nine".