123038687 has 4 divisors (see below), whose sum is σ = 123864600. Its totient is φ = 122212776.

The previous prime is 123038683. The next prime is 123038701. The reversal of 123038687 is 786830321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786830321 = 15823 ⋅49727.

It is a cyclic number.

It is not a de Polignac number, because 123038687 - 2² = 123038683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123038687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123038681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412733 + ... + 413030.

It is an arithmetic number, because the mean of its divisors is an integer number (30966150).

Almost surely, 2^123038687 is an apocalyptic number.

123038687 is a deficient number, since it is larger than the sum of its proper divisors (825913).

123038687 is an equidigital number, since it uses as much as digits as its factorization.

123038687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825912.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 123038687 is about 11092.2805139430. The cubic root of 123038687 is about 497.3711181851.

The spelling of 123038687 in words is "one hundred twenty-three million, thirty-eight thousand, six hundred eighty-seven".