1152421441 has 4 divisors (see below), whose sum is σ = 1152500272. Its totient is φ = 1152342612.

The previous prime is 1152421379. The next prime is 1152421451. The reversal of 1152421441 is 1441242511.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1152421441 - 2¹⁷ = 1152290369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1152421451) 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 3 ways as a sum of consecutive naturals, for example, 10335 + ... + 49108.

It is an arithmetic number, because the mean of its divisors is an integer number (288125068).

Almost surely, 2^1152421441 is an apocalyptic number.

It is an amenable number.

1152421441 is a deficient number, since it is larger than the sum of its proper divisors (78831).

1152421441 is an equidigital number, since it uses as much as digits as its factorization.

1152421441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78830.

The product of its digits is 1280, while the sum is 25.

The square root of 1152421441 is about 33947.3333415159. Note that the first 4 decimals coincide. The cubic root of 1152421441 is about 1048.4243763427.

Adding to 1152421441 its reverse (1441242511), we get a palindrome (2593663952).

The spelling of 1152421441 in words is "one billion, one hundred fifty-two million, four hundred twenty-one thousand, four hundred forty-one".