122420393 has 2 divisors, whose sum is σ = 122420394. Its totient is φ = 122420392.

The previous prime is 122420387. The next prime is 122420413. The reversal of 122420393 is 393024221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83320384 + 39100009 = 9128^2 + 6253^2 .

It is an emirp because it is prime and its reverse (393024221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122420393 - 2⁴ = 122420377 is a prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (122420303) 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, 61210196 + 61210197.

It is an arithmetic number, because the mean of its divisors is an integer number (61210197).

Almost surely, 2^122420393 is an apocalyptic number.

It is an amenable number.

122420393 is a deficient number, since it is larger than the sum of its proper divisors (1).

122420393 is an equidigital number, since it uses as much as digits as its factorization.

122420393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 122420393 is about 11064.3749484551. The cubic root of 122420393 is about 496.5365889604.

The spelling of 122420393 in words is "one hundred twenty-two million, four hundred twenty thousand, three hundred ninety-three".