1043040091 has 2 divisors, whose sum is σ = 1043040092. Its totient is φ = 1043040090.

The previous prime is 1043039989. The next prime is 1043040107. The reversal of 1043040091 is 1900403401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1043040091 - 2⁹ = 1043039579 is a prime.

It is not a weakly prime, because it can be changed into another prime (1043040991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521520045 + 521520046.

It is an arithmetic number, because the mean of its divisors is an integer number (521520046).

Almost surely, 2^1043040091 is an apocalyptic number.

1043040091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043040091 is an equidigital number, since it uses as much as digits as its factorization.

1043040091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1043040091 is about 32296.1312079326. The cubic root of 1043040091 is about 1014.1456539611.

Adding to 1043040091 its reverse (1900403401), we get a palindrome (2943443492).

The spelling of 1043040091 in words is "one billion, forty-three million, forty thousand, ninety-one".