1322138429 has 2 divisors, whose sum is σ = 1322138430. Its totient is φ = 1322138428.

The previous prime is 1322138413. The next prime is 1322138473. The reversal of 1322138429 is 9248312231.

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., 1258617529 + 63520900 = 35477^2 + 7970^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322138429 - 2⁴ = 1322138413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322135429) 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, 661069214 + 661069215.

It is an arithmetic number, because the mean of its divisors is an integer number (661069215).

Almost surely, 2^1322138429 is an apocalyptic number.

It is an amenable number.

1322138429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322138429 is an equidigital number, since it uses as much as digits as its factorization.

1322138429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The square root of 1322138429 is about 36361.2215003842. The cubic root of 1322138429 is about 1097.5533580325.

The spelling of 1322138429 in words is "one billion, three hundred twenty-two million, one hundred thirty-eight thousand, four hundred twenty-nine".