1042609 has 2 divisors, whose sum is σ = 1042610. Its totient is φ = 1042608.

The previous prime is 1042607. The next prime is 1042619. The reversal of 1042609 is 9062401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1040400 + 2209 = 1020^2 + 47^2 .

It is an emirp because it is prime and its reverse (9062401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042609 - 2¹ = 1042607 is a prime.

Together with 1042607, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1042609.

It is not a weakly prime, because it can be changed into another prime (1042607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521304 + 521305.

It is an arithmetic number, because the mean of its divisors is an integer number (521305).

2^1042609 is an apocalyptic number.

It is an amenable number.

1042609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042609 is an equidigital number, since it uses as much as digits as its factorization.

1042609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1042609 is about 1021.0822689676. The cubic root of 1042609 is about 101.4005918422.

The spelling of 1042609 in words is "one million, forty-two thousand, six hundred nine".