1152126321 has 4 divisors (see below), whose sum is σ = 1536168432. Its totient is φ = 768084212.

The previous prime is 1152126317. The next prime is 1152126323. The reversal of 1152126321 is 1236212511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1152126321 - 2² = 1152126317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1152126291 and 1152126300.

It is not an unprimeable number, because it can be changed into a prime (1152126323) 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 in 3 ways as a sum of consecutive naturals, for example, 192021051 + ... + 192021056.

It is an arithmetic number, because the mean of its divisors is an integer number (384042108).

Almost surely, 2^1152126321 is an apocalyptic number.

It is an amenable number.

1152126321 is a deficient number, since it is larger than the sum of its proper divisors (384042111).

1152126321 is an equidigital number, since it uses as much as digits as its factorization.

1152126321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384042110.

The product of its digits is 720, while the sum is 24.

The square root of 1152126321 is about 33942.9863300211. The cubic root of 1152126321 is about 1048.3348727963.

Adding to 1152126321 its reverse (1236212511), we get a palindrome (2388338832).

The spelling of 1152126321 in words is "one billion, one hundred fifty-two million, one hundred twenty-six thousand, three hundred twenty-one".