1224342961 has 2 divisors, whose sum is σ = 1224342962. Its totient is φ = 1224342960.

The previous prime is 1224342947. The next prime is 1224343013. The reversal of 1224342961 is 1692434221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 651219361 + 573123600 = 25519^2 + 23940^2 .

It is an emirp because it is prime and its reverse (1692434221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1224342961 - 2¹¹ = 1224340913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1224342061) 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, 612171480 + 612171481.

It is an arithmetic number, because the mean of its divisors is an integer number (612171481).

Almost surely, 2^1224342961 is an apocalyptic number.

It is an amenable number.

1224342961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224342961 is an equidigital number, since it uses as much as digits as its factorization.

1224342961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 1224342961 is about 34990.6124696325. The cubic root of 1224342961 is about 1069.7961474406.

The spelling of 1224342961 in words is "one billion, two hundred twenty-four million, three hundred forty-two thousand, nine hundred sixty-one".