122147849 has 2 divisors, whose sum is σ = 122147850. Its totient is φ = 122147848.

The previous prime is 122147833. The next prime is 122147869. The reversal of 122147849 is 948741221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111682624 + 10465225 = 10568^2 + 3235^2 .

It is a cyclic number.

It is not a de Polignac number, because 122147849 - 2⁴ = 122147833 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (122147819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61073924 + 61073925.

It is an arithmetic number, because the mean of its divisors is an integer number (61073925).

Almost surely, 2^122147849 is an apocalyptic number.

It is an amenable number.

122147849 is a deficient number, since it is larger than the sum of its proper divisors (1).

122147849 is an equidigital number, since it uses as much as digits as its factorization.

122147849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 38.

The square root of 122147849 is about 11052.0518004577. The cubic root of 122147849 is about 496.1678360755.

The spelling of 122147849 in words is "one hundred twenty-two million, one hundred forty-seven thousand, eight hundred forty-nine".