1042309 has 2 divisors, whose sum is σ = 1042310. Its totient is φ = 1042308.

The previous prime is 1042273. The next prime is 1042331. The reversal of 1042309 is 9032401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 717409 + 324900 = 847^2 + 570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042309 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042369) 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, 521154 + 521155.

It is an arithmetic number, because the mean of its divisors is an integer number (521155).

2^1042309 is an apocalyptic number.

It is an amenable number.

1042309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042309 is an equidigital number, since it uses as much as digits as its factorization.

1042309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1042309 is about 1020.9353554462. The cubic root of 1042309 is about 101.3908652506.

The spelling of 1042309 in words is "one million, forty-two thousand, three hundred nine".