136120109 has 8 divisors (see below), whose sum is σ = 137248800. Its totient is φ = 134996400.

The previous prime is 136120087. The next prime is 136120147. The reversal of 136120109 is 901021631.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136120109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136120169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68867 + ... + 70815.

It is an arithmetic number, because the mean of its divisors is an integer number (17156100).

Almost surely, 2^136120109 is an apocalyptic number.

It is an amenable number.

136120109 is a deficient number, since it is larger than the sum of its proper divisors (1128691).

136120109 is a wasteful number, since it uses less digits than its factorization.

136120109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 136120109 is about 11667.0522841033. The cubic root of 136120109 is about 514.4076628322.

The spelling of 136120109 in words is "one hundred thirty-six million, one hundred twenty thousand, one hundred nine".