1011442043 has 4 divisors (see below), whose sum is σ = 1055417808. Its totient is φ = 967466280.

The previous prime is 1011442009. The next prime is 1011442051. The reversal of 1011442043 is 3402441101.

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 1011442043 - 2¹⁶ = 1011376507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011472043) 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, 21987848 + ... + 21987893.

It is an arithmetic number, because the mean of its divisors is an integer number (263854452).

Almost surely, 2^1011442043 is an apocalyptic number.

1011442043 is a deficient number, since it is larger than the sum of its proper divisors (43975765).

1011442043 is an equidigital number, since it uses as much as digits as its factorization.

1011442043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43975764.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1011442043 is about 31803.1766180676. The cubic root of 1011442043 is about 1003.7995593974.

Adding to 1011442043 its reverse (3402441101), we get a palindrome (4413883144).

The spelling of 1011442043 in words is "one billion, eleven million, four hundred forty-two thousand, forty-three".