1042443191 has 16 divisors (see below), whose sum is σ = 1104913920. Its totient is φ = 981525600.

The previous prime is 1042443161. The next prime is 1042443203. The reversal of 1042443191 is 1913442401.

It is a cyclic number.

It is not a de Polignac number, because 1042443191 - 2¹⁴ = 1042426807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042443161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407366 + ... + 409916.

It is an arithmetic number, because the mean of its divisors is an integer number (69057120).

Almost surely, 2^1042443191 is an apocalyptic number.

1042443191 is a deficient number, since it is larger than the sum of its proper divisors (62470729).

1042443191 is a wasteful number, since it uses less digits than its factorization.

1042443191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1042443191 is about 32286.8888405185. Note that the first 4 decimals coincide. The cubic root of 1042443191 is about 1013.9521621813.

Adding to 1042443191 its reverse (1913442401), we get a palindrome (2955885592).

The spelling of 1042443191 in words is "one billion, forty-two million, four hundred forty-three thousand, one hundred ninety-one".