1021802 has 16 divisors (see below), whose sum is σ = 1664712. Its totient is φ = 468480.

The previous prime is 1021799. The next prime is 1021807. The reversal of 1021802 is 2081201.

It can be written as a sum of positive squares in 4 ways, for example, as 978121 + 43681 = 989^2 + 209^2 .

It is not an unprimeable number, because it can be changed into a prime (1021807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1028 + ... + 1760.

2^1021802 is an apocalyptic number.

1021802 is a deficient number, since it is larger than the sum of its proper divisors (642910).

1021802 is a wasteful number, since it uses less digits than its factorization.

1021802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1021802 is about 1010.8422230991. The cubic root of 1021802 is about 100.7215149744.

It can be divided in two parts, 10 and 21802, that added together give a palindrome (21812).

The spelling of 1021802 in words is "one million, twenty-one thousand, eight hundred two".