1042111043 has 4 divisors (see below), whose sum is σ = 1042558920. Its totient is φ = 1041663168.

The previous prime is 1042111039. The next prime is 1042111051. The reversal of 1042111043 is 3401112401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1042111043 - 2² = 1042111039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042111003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220430 + ... + 225107.

It is an arithmetic number, because the mean of its divisors is an integer number (260639730).

Almost surely, 2^1042111043 is an apocalyptic number.

1042111043 is a deficient number, since it is larger than the sum of its proper divisors (447877).

1042111043 is an equidigital number, since it uses as much as digits as its factorization.

1042111043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447876.

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

The square root of 1042111043 is about 32281.7447328982. The cubic root of 1042111043 is about 1013.8444607222.

Adding to 1042111043 its reverse (3401112401), we get a palindrome (4443223444).

The spelling of 1042111043 in words is "one billion, forty-two million, one hundred eleven thousand, forty-three".