1020009 has 8 divisors (see below), whose sum is σ = 1373632. Its totient is φ = 673200.

The previous prime is 1020007. The next prime is 1020011. The reversal of 1020009 is 9000201.

It is a happy number.

1020009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1020007) and next prime (1020011).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020009 - 2¹ = 1020007 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1019976 and 1020003.

It is not an unprimeable number, because it can be changed into a prime (1020001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1342 + ... + 1959.

It is an arithmetic number, because the mean of its divisors is an integer number (171704).

2^1020009 is an apocalyptic number.

It is an amenable number.

1020009 is a deficient number, since it is larger than the sum of its proper divisors (353623).

1020009 is a wasteful number, since it uses less digits than its factorization.

1020009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1020009 is about 1009.9549494903. The cubic root of 1020009 is about 100.6625670206.

The spelling of 1020009 in words is "one million, twenty thousand, nine".