136672129 has 8 divisors (see below), whose sum is σ = 157867488. Its totient is φ = 116938560.

The previous prime is 136672121. The next prime is 136672139. The reversal of 136672129 is 921276631.

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

It is a cyclic number.

It is not a de Polignac number, because 136672129 - 2³ = 136672121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136672121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365247 + ... + 365620.

It is an arithmetic number, because the mean of its divisors is an integer number (19733436).

Almost surely, 2^136672129 is an apocalyptic number.

It is an amenable number.

136672129 is a deficient number, since it is larger than the sum of its proper divisors (21195359).

136672129 is a wasteful number, since it uses less digits than its factorization.

136672129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730895.

The product of its digits is 27216, while the sum is 37.

The square root of 136672129 is about 11690.6855658682. The cubic root of 136672129 is about 515.1020993414.

The spelling of 136672129 in words is "one hundred thirty-six million, six hundred seventy-two thousand, one hundred twenty-nine".