123147135087 has 8 divisors (see below), whose sum is σ = 165489063936. Its totient is φ = 81451648152.

The previous prime is 123147135079. The next prime is 123147135121. The reversal of 123147135087 is 780531741321.

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

It is not a de Polignac number, because 123147135087 - 2³ = 123147135079 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123147135887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161610033 + ... + 161610794.

It is an arithmetic number, because the mean of its divisors is an integer number (20686132992).

Almost surely, 2^123147135087 is an apocalyptic number.

123147135087 is a deficient number, since it is larger than the sum of its proper divisors (42341928849).

123147135087 is a wasteful number, since it uses less digits than its factorization.

123147135087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323220957.

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 123147135087 in words is "one hundred twenty-three billion, one hundred forty-seven million, one hundred thirty-five thousand, eighty-seven".