1042897769 has 2 divisors, whose sum is σ = 1042897770. Its totient is φ = 1042897768.

The previous prime is 1042897729. The next prime is 1042897789. The reversal of 1042897769 is 9677982401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 857611225 + 185286544 = 29285^2 + 13612^2 .

It is an emirp because it is prime and its reverse (9677982401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042897769 - 2¹² = 1042893673 is a prime.

It is a super-2 number, since 2×1042897769² = 2175271513170354722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1042897769.

It is not a weakly prime, because it can be changed into another prime (1042897729) 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, 521448884 + 521448885.

It is an arithmetic number, because the mean of its divisors is an integer number (521448885).

Almost surely, 2^1042897769 is an apocalyptic number.

It is an amenable number.

1042897769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042897769 is an equidigital number, since it uses as much as digits as its factorization.

1042897769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The square root of 1042897769 is about 32293.9277419146. The cubic root of 1042897769 is about 1014.0995254041.

The spelling of 1042897769 in words is "one billion, forty-two million, eight hundred ninety-seven thousand, seven hundred sixty-nine".