126322789 has 2 divisors, whose sum is σ = 126322790. Its totient is φ = 126322788.

The previous prime is 126322787. The next prime is 126322829. The reversal of 126322789 is 987223621.

It is an a-pointer prime, because the next prime (126322829) can be obtained adding 126322789 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87572164 + 38750625 = 9358^2 + 6225^2 .

It is a cyclic number.

It is not a de Polignac number, because 126322789 - 2¹ = 126322787 is a prime.

Together with 126322787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126322787) 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, 63161394 + 63161395.

It is an arithmetic number, because the mean of its divisors is an integer number (63161395).

Almost surely, 2^126322789 is an apocalyptic number.

It is an amenable number.

126322789 is a deficient number, since it is larger than the sum of its proper divisors (1).

126322789 is an equidigital number, since it uses as much as digits as its factorization.

126322789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 126322789 is about 11239.3411283758. The cubic root of 126322789 is about 501.7575335796.

The spelling of 126322789 in words is "one hundred twenty-six million, three hundred twenty-two thousand, seven hundred eighty-nine".