121874689 has 2 divisors, whose sum is σ = 121874690. Its totient is φ = 121874688.

The previous prime is 121874603. The next prime is 121874693. The reversal of 121874689 is 986478121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120824064 + 1050625 = 10992^2 + 1025^2 .

It is an emirp because it is prime and its reverse (986478121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121874689 - 2⁷ = 121874561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121877689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60937344 + 60937345.

It is an arithmetic number, because the mean of its divisors is an integer number (60937345).

Almost surely, 2^121874689 is an apocalyptic number.

It is an amenable number.

121874689 is a deficient number, since it is larger than the sum of its proper divisors (1).

121874689 is an equidigital number, since it uses as much as digits as its factorization.

121874689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 46.

The square root of 121874689 is about 11039.6869973745. The cubic root of 121874689 is about 495.7976989448.

The spelling of 121874689 in words is "one hundred twenty-one million, eight hundred seventy-four thousand, six hundred eighty-nine".