122665747 has 2 divisors, whose sum is σ = 122665748. Its totient is φ = 122665746.

The previous prime is 122665721. The next prime is 122665757. The reversal of 122665747 is 747566221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122665747 - 2¹¹ = 122663699 is a prime.

It is not a weakly prime, because it can be changed into another prime (122665757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61332873 + 61332874.

It is an arithmetic number, because the mean of its divisors is an integer number (61332874).

Almost surely, 2^122665747 is an apocalyptic number.

122665747 is a deficient number, since it is larger than the sum of its proper divisors (1).

122665747 is an equidigital number, since it uses as much as digits as its factorization.

122665747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 40.

The square root of 122665747 is about 11075.4569657419. The cubic root of 122665747 is about 496.8680858550.

The spelling of 122665747 in words is "one hundred twenty-two million, six hundred sixty-five thousand, seven hundred forty-seven".