122887 has 2 divisors, whose sum is σ = 122888. Its totient is φ = 122886.

The previous prime is 122869. The next prime is 122891. The reversal of 122887 is 788221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122887 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61443 + 61444.

It is an arithmetic number, because the mean of its divisors is an integer number (61444).

2¹²²⁸⁸⁷ is an apocalyptic number.

122887 is a deficient number, since it is larger than the sum of its proper divisors (1).

122887 is an equidigital number, since it uses as much as digits as its factorization.

122887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1792, while the sum is 28.

The square root of 122887 is about 350.5524211869. The cubic root of 122887 is about 49.7166641150.

The spelling of 122887 in words is "one hundred twenty-two thousand, eight hundred eighty-seven".