122406649 has 2 divisors, whose sum is σ = 122406650. Its totient is φ = 122406648.

The previous prime is 122406617. The next prime is 122406653. The reversal of 122406649 is 946604221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103327225 + 19079424 = 10165^2 + 4368^2 .

It is a cyclic number.

It is not a de Polignac number, because 122406649 - 2⁵ = 122406617 is a prime.

It is equal to p_6970813 and since 122406649 and 6970813 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (122406049) 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, 61203324 + 61203325.

It is an arithmetic number, because the mean of its divisors is an integer number (61203325).

Almost surely, 2^122406649 is an apocalyptic number.

It is an amenable number.

122406649 is a deficient number, since it is larger than the sum of its proper divisors (1).

122406649 is an equidigital number, since it uses as much as digits as its factorization.

122406649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 122406649 is about 11063.7538385487. The cubic root of 122406649 is about 496.5180063966.

The spelling of 122406649 in words is "one hundred twenty-two million, four hundred six thousand, six hundred forty-nine".