122538887 has 2 divisors, whose sum is σ = 122538888. Its totient is φ = 122538886.

The previous prime is 122538881. The next prime is 122538901. The reversal of 122538887 is 788835221.

It is a weak prime.

It is an emirp because it is prime and its reverse (788835221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122538887 - 2⁸ = 122538631 is a prime.

It is a Chen prime.

It is equal to p_6977834 and since 122538887 and 6977834 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122538881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61269443 + 61269444.

It is an arithmetic number, because the mean of its divisors is an integer number (61269444).

Almost surely, 2^122538887 is an apocalyptic number.

122538887 is a deficient number, since it is larger than the sum of its proper divisors (1).

122538887 is an equidigital number, since it uses as much as digits as its factorization.

122538887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 44.

The square root of 122538887 is about 11069.7284067858. The cubic root of 122538887 is about 496.6967410183.

The spelling of 122538887 in words is "one hundred twenty-two million, five hundred thirty-eight thousand, eight hundred eighty-seven".