122420461 has 2 divisors, whose sum is σ = 122420462. Its totient is φ = 122420460.

The previous prime is 122420449. The next prime is 122420491. The reversal of 122420461 is 164024221.

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., 82919236 + 39501225 = 9106^2 + 6285^2 .

It is an emirp because it is prime and its reverse (164024221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122420461 - 2⁵ = 122420429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122420491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61210230 + 61210231.

It is an arithmetic number, because the mean of its divisors is an integer number (61210231).

Almost surely, 2^122420461 is an apocalyptic number.

It is an amenable number.

122420461 is a deficient number, since it is larger than the sum of its proper divisors (1).

122420461 is an equidigital number, since it uses as much as digits as its factorization.

122420461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 122420461 is about 11064.3780213801. The cubic root of 122420461 is about 496.5366808963.

Adding to 122420461 its reverse (164024221), we get a palindrome (286444682).

The spelling of 122420461 in words is "one hundred twenty-two million, four hundred twenty thousand, four hundred sixty-one".