1121443043 has 8 divisors (see below), whose sum is σ = 1284947040. Its totient is φ = 958763520.

The previous prime is 1121443019. The next prime is 1121443049. The reversal of 1121443043 is 3403441211.

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 1121443043 - 2⁶ = 1121442979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121443049) 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, 203198 + ... + 208643.

It is an arithmetic number, because the mean of its divisors is an integer number (160618380).

Almost surely, 2^1121443043 is an apocalyptic number.

1121443043 is a deficient number, since it is larger than the sum of its proper divisors (163503997).

1121443043 is an equidigital number, since it uses as much as digits as its factorization.

1121443043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412237.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1121443043 is about 33487.9536998008. The cubic root of 1121443043 is about 1038.9446403999.

Adding to 1121443043 its reverse (3403441211), we get a palindrome (4524884254).

The spelling of 1121443043 in words is "one billion, one hundred twenty-one million, four hundred forty-three thousand, forty-three".