136242987 has 8 divisors (see below), whose sum is σ = 181801536. Its totient is φ = 90756552.

The previous prime is 136242973. The next prime is 136243021. The reversal of 136242987 is 789242631.

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

It is not a de Polignac number, because 136242987 - 2²⁴ = 119465771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136242907) 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, 13453 + ... + 21294.

It is an arithmetic number, because the mean of its divisors is an integer number (22725192).

Almost surely, 2^136242987 is an apocalyptic number.

136242987 is a deficient number, since it is larger than the sum of its proper divisors (45558549).

136242987 is a wasteful number, since it uses less digits than its factorization.

136242987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36057.

The product of its digits is 145152, while the sum is 42.

The square root of 136242987 is about 11672.3171221485. The cubic root of 136242987 is about 514.5624045396.

The spelling of 136242987 in words is "one hundred thirty-six million, two hundred forty-two thousand, nine hundred eighty-seven".