1155432043 has 4 divisors (see below), whose sum is σ = 1160522280. Its totient is φ = 1150341808.

The previous prime is 1155432023. The next prime is 1155432073. The reversal of 1155432043 is 3402345511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155432043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155432023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2544778 + ... + 2545231.

It is an arithmetic number, because the mean of its divisors is an integer number (290130570).

Almost surely, 2^1155432043 is an apocalyptic number.

1155432043 is a deficient number, since it is larger than the sum of its proper divisors (5090237).

1155432043 is an equidigital number, since it uses as much as digits as its factorization.

1155432043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5090236.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1155432043 is about 33991.6466650264. The cubic root of 1155432043 is about 1049.3365553414.

Adding to 1155432043 its reverse (3402345511), we get a palindrome (4557777554).

The spelling of 1155432043 in words is "one billion, one hundred fifty-five million, four hundred thirty-two thousand, forty-three".