1042716581 has 2 divisors, whose sum is σ = 1042716582. Its totient is φ = 1042716580.

The previous prime is 1042716553. The next prime is 1042716593. The reversal of 1042716581 is 1856172401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 567868900 + 474847681 = 23830^2 + 21791^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042716581 - 2⁶ = 1042716517 is a prime.

It is a super-2 number, since 2×1042716581² = 2174515736584659122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042796581) 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 as a sum of consecutive naturals, namely, 521358290 + 521358291.

It is an arithmetic number, because the mean of its divisors is an integer number (521358291).

Almost surely, 2^1042716581 is an apocalyptic number.

It is an amenable number.

1042716581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042716581 is an equidigital number, since it uses as much as digits as its factorization.

1042716581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 1042716581 is about 32291.1223248744. The cubic root of 1042716581 is about 1014.0407937584.

Adding to 1042716581 its reverse (1856172401), we get a palindrome (2898888982).

The spelling of 1042716581 in words is "one billion, forty-two million, seven hundred sixteen thousand, five hundred eighty-one".