1155354243 has 8 divisors (see below), whose sum is σ = 1544240400. Its totient is φ = 768352128.

The previous prime is 1155354217. The next prime is 1155354259. The reversal of 1155354243 is 3424535511.

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

It is not a de Polignac number, because 1155354243 - 2¹⁰ = 1155353219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155354203) 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, 469578 + ... + 472031.

It is an arithmetic number, because the mean of its divisors is an integer number (193030050).

Almost surely, 2^1155354243 is an apocalyptic number.

1155354243 is a deficient number, since it is larger than the sum of its proper divisors (388886157).

1155354243 is an equidigital number, since it uses as much as digits as its factorization.

1155354243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942021.

The product of its digits is 36000, while the sum is 33.

The square root of 1155354243 is about 33990.5022469513. The cubic root of 1155354243 is about 1049.3130027616.

Adding to 1155354243 its reverse (3424535511), we get a palindrome (4579889754).

The spelling of 1155354243 in words is "one billion, one hundred fifty-five million, three hundred fifty-four thousand, two hundred forty-three".