1121503145 has 8 divisors (see below), whose sum is σ = 1538061504. Its totient is φ = 769030704.

The previous prime is 1121503133. The next prime is 1121503169. The reversal of 1121503145 is 5413051211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121503145 - 2⁴ = 1121503129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121503145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16021439 + ... + 16021508.

It is an arithmetic number, because the mean of its divisors is an integer number (192257688).

Almost surely, 2^1121503145 is an apocalyptic number.

It is an amenable number.

1121503145 is a deficient number, since it is larger than the sum of its proper divisors (416558359).

1121503145 is an equidigital number, since it uses as much as digits as its factorization.

1121503145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32042959.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1121503145 is about 33488.8510552393. The cubic root of 1121503145 is about 1038.9632002771.

Adding to 1121503145 its reverse (5413051211), we get a palindrome (6534554356).

The spelling of 1121503145 in words is "one billion, one hundred twenty-one million, five hundred three thousand, one hundred forty-five".