122387887 has 2 divisors, whose sum is σ = 122387888. Its totient is φ = 122387886.

The previous prime is 122387843. The next prime is 122387921. The reversal of 122387887 is 788783221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122387887 - 2¹⁵ = 122355119 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122387087) 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 as a sum of consecutive naturals, namely, 61193943 + 61193944.

It is an arithmetic number, because the mean of its divisors is an integer number (61193944).

Almost surely, 2^122387887 is an apocalyptic number.

122387887 is a deficient number, since it is larger than the sum of its proper divisors (1).

122387887 is an equidigital number, since it uses as much as digits as its factorization.

122387887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 301056, while the sum is 46.

The square root of 122387887 is about 11062.9059021579. The cubic root of 122387887 is about 496.4926370045.

The spelling of 122387887 in words is "one hundred twenty-two million, three hundred eighty-seven thousand, eight hundred eighty-seven".