1432121209 has 2 divisors, whose sum is σ = 1432121210. Its totient is φ = 1432121208.

The previous prime is 1432121203. The next prime is 1432121231. The reversal of 1432121209 is 9021212341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1327509225 + 104611984 = 36435^2 + 10228^2 .

It is a cyclic number.

It is not a de Polignac number, because 1432121209 - 2⁵ = 1432121177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1432121203) 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, 716060604 + 716060605.

It is an arithmetic number, because the mean of its divisors is an integer number (716060605).

Almost surely, 2^1432121209 is an apocalyptic number.

It is an amenable number.

1432121209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1432121209 is an equidigital number, since it uses as much as digits as its factorization.

1432121209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1432121209 is about 37843.3773466375. The cubic root of 1432121209 is about 1127.1799598043.

The spelling of 1432121209 in words is "one billion, four hundred thirty-two million, one hundred twenty-one thousand, two hundred nine".