122651449 has 2 divisors, whose sum is σ = 122651450. Its totient is φ = 122651448.

The previous prime is 122651429. The next prime is 122651453. The reversal of 122651449 is 944156221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97219600 + 25431849 = 9860^2 + 5043^2 .

It is an emirp because it is prime and its reverse (944156221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122651449 is a prime.

It is not a weakly prime, because it can be changed into another prime (122651429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61325724 + 61325725.

It is an arithmetic number, because the mean of its divisors is an integer number (61325725).

Almost surely, 2^122651449 is an apocalyptic number.

It is an amenable number.

122651449 is a deficient number, since it is larger than the sum of its proper divisors (1).

122651449 is an equidigital number, since it uses as much as digits as its factorization.

122651449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 122651449 is about 11074.8114656639. The cubic root of 122651449 is about 496.8487800148.

The spelling of 122651449 in words is "one hundred twenty-two million, six hundred fifty-one thousand, four hundred forty-nine".