1042881569 has 2 divisors, whose sum is σ = 1042881570. Its totient is φ = 1042881568.

The previous prime is 1042881563. The next prime is 1042881613. The reversal of 1042881569 is 9651882401.

It is an a-pointer prime, because the next prime (1042881613) can be obtained adding 1042881569 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1009968400 + 32913169 = 31780^2 + 5737^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042881569 - 2⁸ = 1042881313 is a prime.

It is a super-2 number, since 2×1042881569² = 2175203933919803522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1042881563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521440784 + 521440785.

It is an arithmetic number, because the mean of its divisors is an integer number (521440785).

Almost surely, 2^1042881569 is an apocalyptic number.

It is an amenable number.

1042881569 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042881569 is an equidigital number, since it uses as much as digits as its factorization.

1042881569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 1042881569 is about 32293.6769197934. The cubic root of 1042881569 is about 1014.0942744907.

The spelling of 1042881569 in words is "one billion, forty-two million, eight hundred eighty-one thousand, five hundred sixty-nine".