1121042043 has 24 divisors (see below), whose sum is σ = 1768765440. Its totient is φ = 678544560.

The previous prime is 1121042003. The next prime is 1121042051. The reversal of 1121042043 is 3402401211.

It is not a de Polignac number, because 1121042043 - 2⁸ = 1121041787 is a prime.

It is a super-2 number, since 2×1121042043² = 2513470524347227698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1121042003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74598 + ... + 88356.

It is an arithmetic number, because the mean of its divisors is an integer number (73698560).

Almost surely, 2^1121042043 is an apocalyptic number.

1121042043 is a deficient number, since it is larger than the sum of its proper divisors (647723397).

1121042043 is a wasteful number, since it uses less digits than its factorization.

1121042043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14599 (or 14596 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1121042043 is about 33481.9659369040. The cubic root of 1121042043 is about 1038.8207920926.

Adding to 1121042043 its reverse (3402401211), we get a palindrome (4523443254).

The spelling of 1121042043 in words is "one billion, one hundred twenty-one million, forty-two thousand, forty-three".