1421132309 has 2 divisors, whose sum is σ = 1421132310. Its totient is φ = 1421132308.

The previous prime is 1421132267. The next prime is 1421132347. The reversal of 1421132309 is 9032311241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1419631684 + 1500625 = 37678^2 + 1225^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421132309 - 2¹² = 1421128213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421132359) 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, 710566154 + 710566155.

It is an arithmetic number, because the mean of its divisors is an integer number (710566155).

Almost surely, 2^1421132309 is an apocalyptic number.

It is an amenable number.

1421132309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421132309 is an equidigital number, since it uses as much as digits as its factorization.

1421132309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1421132309 is about 37697.9085494142. The cubic root of 1421132309 is about 1124.2895422754.

The spelling of 1421132309 in words is "one billion, four hundred twenty-one million, one hundred thirty-two thousand, three hundred nine".