136124987 has 8 divisors (see below), whose sum is σ = 143424000. Its totient is φ = 128839464.

The previous prime is 136124959. The next prime is 136124993. The reversal of 136124987 is 789421631.

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 136124987 - 2¹⁴ = 136108603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136124917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22514 + ... + 27912.

It is an arithmetic number, because the mean of its divisors is an integer number (17928000).

Almost surely, 2^136124987 is an apocalyptic number.

136124987 is a deficient number, since it is larger than the sum of its proper divisors (7299013).

136124987 is a wasteful number, since it uses less digits than its factorization.

136124987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6745.

The product of its digits is 72576, while the sum is 41.

The square root of 136124987 is about 11667.2613324636. The cubic root of 136124987 is about 514.4138075295.

The spelling of 136124987 in words is "one hundred thirty-six million, one hundred twenty-four thousand, nine hundred eighty-seven".