1123304145 has 8 divisors (see below), whose sum is σ = 1797286656. Its totient is φ = 599095536.

The previous prime is 1123304141. The next prime is 1123304167. The reversal of 1123304145 is 5414033211.

It is a happy number.

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

It is not a de Polignac number, because 1123304145 - 2² = 1123304141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123304141) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 37443457 + ... + 37443486.

It is an arithmetic number, because the mean of its divisors is an integer number (224660832).

Almost surely, 2^1123304145 is an apocalyptic number.

1123304145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1123304145 is a deficient number, since it is larger than the sum of its proper divisors (673982511).

1123304145 is an equidigital number, since it uses as much as digits as its factorization.

1123304145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74886951.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1123304145 is about 33515.7298145214. The cubic root of 1123304145 is about 1039.5190530770.

Adding to 1123304145 its reverse (5414033211), we get a palindrome (6537337356).

The spelling of 1123304145 in words is "one billion, one hundred twenty-three million, three hundred four thousand, one hundred forty-five".