1321132434 has 64 divisors (see below), whose sum is σ = 2886844800. Its totient is φ = 401614848.

The previous prime is 1321132433. The next prime is 1321132469. The reversal of 1321132434 is 4342311231.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1321132433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 407532 + ... + 410760.

It is an arithmetic number, because the mean of its divisors is an integer number (45106950).

Almost surely, 2^1321132434 is an apocalyptic number.

1321132434 is an abundant number, since it is smaller than the sum of its proper divisors (1565712366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321132434 is a wasteful number, since it uses less digits than its factorization.

1321132434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387.

The product of its digits is 1728, while the sum is 24.

The square root of 1321132434 is about 36347.3855180809. The cubic root of 1321132434 is about 1097.2749168537.

Adding to 1321132434 its reverse (4342311231), we get a palindrome (5663443665).

The spelling of 1321132434 in words is "one billion, three hundred twenty-one million, one hundred thirty-two thousand, four hundred thirty-four".