1155243044 has 12 divisors (see below), whose sum is σ = 2022392064. Its totient is φ = 577416744.

The previous prime is 1155242999. The next prime is 1155243049. The reversal of 1155243044 is 4403425511.

It is a junction number, because it is equal to n+sod(n) for n = 1155242998 and 1155243016.

It is not an unprimeable number, because it can be changed into a prime (1155243049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38132 + ... + 61355.

It is an arithmetic number, because the mean of its divisors is an integer number (168532672).

Almost surely, 2^1155243044 is an apocalyptic number.

It is an amenable number.

1155243044 is a deficient number, since it is larger than the sum of its proper divisors (867149020).

1155243044 is a wasteful number, since it uses less digits than its factorization.

1155243044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102394 (or 102392 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1155243044 is about 33988.8664712432. The cubic root of 1155243044 is about 1049.2793373869.

Adding to 1155243044 its reverse (4403425511), we get a palindrome (5558668555).

The spelling of 1155243044 in words is "one billion, one hundred fifty-five million, two hundred forty-three thousand, forty-four".