122404013 has 2 divisors, whose sum is σ = 122404014. Its totient is φ = 122404012.

The previous prime is 122403923. The next prime is 122404019. The reversal of 122404013 is 310404221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87853129 + 34550884 = 9373^2 + 5878^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122404013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122403982 and 122404000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122404019) 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, 61202006 + 61202007.

It is an arithmetic number, because the mean of its divisors is an integer number (61202007).

Almost surely, 2^122404013 is an apocalyptic number.

It is an amenable number.

122404013 is a deficient number, since it is larger than the sum of its proper divisors (1).

122404013 is an equidigital number, since it uses as much as digits as its factorization.

122404013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 122404013 is about 11063.6347101665. The cubic root of 122404013 is about 496.5144422361.

Adding to 122404013 its reverse (310404221), we get a palindrome (432808234).

The spelling of 122404013 in words is "one hundred twenty-two million, four hundred four thousand, thirteen".