1021006 has 16 divisors (see below), whose sum is σ = 1763424. Its totient is φ = 434304.

The previous prime is 1021001. The next prime is 1021019. The reversal of 1021006 is 6001201.

It is a junction number, because it is equal to n+sod(n) for n = 1020983 and 1021001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021001) 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 7 ways as a sum of consecutive naturals, for example, 3106 + ... + 3418.

It is an arithmetic number, because the mean of its divisors is an integer number (110214).

2^1021006 is an apocalyptic number.

1021006 is a deficient number, since it is larger than the sum of its proper divisors (742418).

1021006 is a wasteful number, since it uses less digits than its factorization.

1021006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1021006 is about 1010.4484153088. The cubic root of 1021006 is about 100.6953536262.

Adding to 1021006 its reverse (6001201), we get a palindrome (7022207).

The spelling of 1021006 in words is "one million, twenty-one thousand, six".