1125432321 has 8 divisors (see below), whose sum is σ = 1616005440. Its totient is φ = 692573712.

The previous prime is 1125432311. The next prime is 1125432337. The reversal of 1125432321 is 1232345211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1125432321 - 2¹⁹ = 1124908033 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1125432291 and 1125432300.

It is not an unprimeable number, because it can be changed into a prime (1125432311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14428581 + ... + 14428658.

It is an arithmetic number, because the mean of its divisors is an integer number (202000680).

Almost surely, 2^1125432321 is an apocalyptic number.

It is an amenable number.

1125432321 is a deficient number, since it is larger than the sum of its proper divisors (490573119).

1125432321 is a wasteful number, since it uses less digits than its factorization.

1125432321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28857255.

The product of its digits is 1440, while the sum is 24.

The square root of 1125432321 is about 33547.4637044293. The cubic root of 1125432321 is about 1040.1751187484.

Adding to 1125432321 its reverse (1232345211), we get a palindrome (2357777532).

The spelling of 1125432321 in words is "one billion, one hundred twenty-five million, four hundred thirty-two thousand, three hundred twenty-one".