1155140266 has 8 divisors (see below), whose sum is σ = 1980240480. Its totient is φ = 495060108.

The previous prime is 1155140243. The next prime is 1155140279. The reversal of 1155140266 is 6620415511.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41254996 + ... + 41255023.

It is an arithmetic number, because the mean of its divisors is an integer number (247530060).

Almost surely, 2^1155140266 is an apocalyptic number.

1155140266 is a deficient number, since it is larger than the sum of its proper divisors (825100214).

1155140266 is an equidigital number, since it uses as much as digits as its factorization.

1155140266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82510028.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1155140266 is about 33987.3545013436. The cubic root of 1155140266 is about 1049.2482195396.

Adding to 1155140266 its reverse (6620415511), we get a palindrome (7775555777).

The spelling of 1155140266 in words is "one billion, one hundred fifty-five million, one hundred forty thousand, two hundred sixty-six".