1121023043 has 8 divisors (see below), whose sum is σ = 1325347680. Its totient is φ = 927743040.

The previous prime is 1121023039. The next prime is 1121023051. The reversal of 1121023043 is 3403201211.

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

It is not a de Polignac number, because 1121023043 - 2² = 1121023039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121023073) 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, 2760938 + ... + 2761343.

It is an arithmetic number, because the mean of its divisors is an integer number (165668460).

Almost surely, 2^1121023043 is an apocalyptic number.

1121023043 is a deficient number, since it is larger than the sum of its proper divisors (204324637).

1121023043 is an equidigital number, since it uses as much as digits as its factorization.

1121023043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5522317.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1121023043 is about 33481.6822008692. The cubic root of 1121023043 is about 1038.8149232355.

Adding to 1121023043 its reverse (3403201211), we get a palindrome (4524224254).

The spelling of 1121023043 in words is "one billion, one hundred twenty-one million, twenty-three thousand, forty-three".