1155122443 has 8 divisors (see below), whose sum is σ = 1234947168. Its totient is φ = 1076617344.

The previous prime is 1155122417. The next prime is 1155122453. The reversal of 1155122443 is 3442215511.

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

It is not a de Polignac number, because 1155122443 - 2¹³ = 1155114251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155122453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328096 + ... + 331597.

It is an arithmetic number, because the mean of its divisors is an integer number (154368396).

Almost surely, 2^1155122443 is an apocalyptic number.

1155122443 is a deficient number, since it is larger than the sum of its proper divisors (79824725).

1155122443 is a wasteful number, since it uses less digits than its factorization.

1155122443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659813.

The product of its digits is 4800, while the sum is 28.

The square root of 1155122443 is about 33987.0922998717. The cubic root of 1155122443 is about 1049.2428231251.

Adding to 1155122443 its reverse (3442215511), we get a palindrome (4597337954).

The spelling of 1155122443 in words is "one billion, one hundred fifty-five million, one hundred twenty-two thousand, four hundred forty-three".