1042712009 has 2 divisors, whose sum is σ = 1042712010. Its totient is φ = 1042712008.

The previous prime is 1042711997. The next prime is 1042712129. The reversal of 1042712009 is 9002172401.

1042712009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 928542784 + 114169225 = 30472^2 + 10685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042712009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1042702009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521356004 + 521356005.

It is an arithmetic number, because the mean of its divisors is an integer number (521356005).

Almost surely, 2^1042712009 is an apocalyptic number.

It is an amenable number.

1042712009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042712009 is an equidigital number, since it uses as much as digits as its factorization.

1042712009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1042712009 is about 32291.0515313453. The cubic root of 1042712009 is about 1014.0393116678.

The spelling of 1042712009 in words is "one billion, forty-two million, seven hundred twelve thousand, nine".