1111042043 has 4 divisors (see below), whose sum is σ = 1169517960. Its totient is φ = 1052566128.

The previous prime is 1111042033. The next prime is 1111042063. The reversal of 1111042043 is 3402401111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3402401111 = 47 ⋅72391513.

It is a cyclic number.

It is not a de Polignac number, because 1111042043 - 2⁴ = 1111042027 is a prime.

It is a super-2 number, since 2×1111042043² = 2468828842627227698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111042013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29237930 + ... + 29237967.

It is an arithmetic number, because the mean of its divisors is an integer number (292379490).

Almost surely, 2^1111042043 is an apocalyptic number.

1111042043 is a deficient number, since it is larger than the sum of its proper divisors (58475917).

1111042043 is an equidigital number, since it uses as much as digits as its factorization.

1111042043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58475916.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1111042043 is about 33332.2972955661. The cubic root of 1111042043 is about 1035.7227071386.

Adding to 1111042043 its reverse (3402401111), we get a palindrome (4513443154).

The spelling of 1111042043 in words is "one billion, one hundred eleven million, forty-two thousand, forty-three".