1068021 has 6 divisors (see below), whose sum is σ = 1542710. Its totient is φ = 712008.

The previous prime is 1068019. The next prime is 1068037. The reversal of 1068021 is 1208601.

It can be written as a sum of positive squares in only one way, i.e., 562500 + 505521 = 750^2 + 711^2 .

It is not a de Polignac number, because 1068021 - 2¹ = 1068019 is a prime.

It is a super-2 number, since 2×1068021² = 2281337712882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1067985 and 1068003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068061) 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 5 ways as a sum of consecutive naturals, for example, 59326 + ... + 59343.

2^1068021 is an apocalyptic number.

It is an amenable number.

1068021 is a deficient number, since it is larger than the sum of its proper divisors (474689).

1068021 is a wasteful number, since it uses less digits than its factorization.

1068021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118675 (or 118672 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1068021 is about 1033.4510148043. The cubic root of 1068021 is about 102.2178159639.

It can be divided in two parts, 10680 and 21, that added together give a palindrome (10701).

The spelling of 1068021 in words is "one million, sixty-eight thousand, twenty-one".