122242457 has 2 divisors, whose sum is σ = 122242458. Its totient is φ = 122242456.

The previous prime is 122242429. The next prime is 122242469. The reversal of 122242457 is 754242221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118897216 + 3345241 = 10904^2 + 1829^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122242457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122244457) 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, 61121228 + 61121229.

It is an arithmetic number, because the mean of its divisors is an integer number (61121229).

Almost surely, 2^122242457 is an apocalyptic number.

It is an amenable number.

122242457 is a deficient number, since it is larger than the sum of its proper divisors (1).

122242457 is an equidigital number, since it uses as much as digits as its factorization.

122242457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 29.

The square root of 122242457 is about 11056.3310822352. The cubic root of 122242457 is about 496.2959030942.

Adding to 122242457 its reverse (754242221), we get a palindrome (876484678).

The spelling of 122242457 in words is "one hundred twenty-two million, two hundred forty-two thousand, four hundred fifty-seven".