122904049 has 2 divisors, whose sum is σ = 122904050. Its totient is φ = 122904048.

The previous prime is 122904037. The next prime is 122904079. The reversal of 122904049 is 940409221.

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., 121705024 + 1199025 = 11032^2 + 1095^2 .

It is an emirp because it is prime and its reverse (940409221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122904049 - 2⁵ = 122904017 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122904049.

It is not a weakly prime, because it can be changed into another prime (122904079) 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, 61452024 + 61452025.

It is an arithmetic number, because the mean of its divisors is an integer number (61452025).

Almost surely, 2^122904049 is an apocalyptic number.

It is an amenable number.

122904049 is a deficient number, since it is larger than the sum of its proper divisors (1).

122904049 is an equidigital number, since it uses as much as digits as its factorization.

122904049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 122904049 is about 11086.2098572957. The cubic root of 122904049 is about 497.1896319249.

The spelling of 122904049 in words is "one hundred twenty-two million, nine hundred four thousand, forty-nine".