123887 has 2 divisors, whose sum is σ = 123888. Its totient is φ = 123886.

The previous prime is 123863. The next prime is 123911. The reversal of 123887 is 788321.

It is a balanced prime because it is at equal distance from previous prime (123863) and next prime (123911).

It is an emirp because it is prime and its reverse (788321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123887 - 2⁸ = 123631 is a prime.

It is a Chen prime.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123817) 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 as a sum of consecutive naturals, namely, 61943 + 61944.

It is an arithmetic number, because the mean of its divisors is an integer number (61944).

2¹²³⁸⁸⁷ is an apocalyptic number.

123887 is a deficient number, since it is larger than the sum of its proper divisors (1).

123887 is an equidigital number, since it uses as much as digits as its factorization.

123887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 29.

The square root of 123887 is about 351.9758514444. The cubic root of 123887 is about 49.8511573570.

The spelling of 123887 in words is "one hundred twenty-three thousand, eight hundred eighty-seven".