1042817 has 4 divisors (see below), whose sum is σ = 1045716. Its totient is φ = 1039920.

The previous prime is 1042799. The next prime is 1042819. The reversal of 1042817 is 7182401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 179776 + 863041 = 424^2 + 929^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042817 - 2¹⁰ = 1041793 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1042792 and 1042801.

It is not an unprimeable number, because it can be changed into a prime (1042819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818 + ... + 1659.

It is an arithmetic number, because the mean of its divisors is an integer number (261429).

2^1042817 is an apocalyptic number.

It is an amenable number.

1042817 is a deficient number, since it is larger than the sum of its proper divisors (2899).

1042817 is an equidigital number, since it uses as much as digits as its factorization.

1042817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1042817 is about 1021.1841166019. The cubic root of 1042817 is about 101.4073345171.

The spelling of 1042817 in words is "one million, forty-two thousand, eight hundred seventeen".