1082021 has 4 divisors (see below), whose sum is σ = 1084332. Its totient is φ = 1079712.

The previous prime is 1082017. The next prime is 1082023. The reversal of 1082021 is 1202801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1202801 = 17 ⋅70753.

It can be written as a sum of positive squares in 2 ways, for example, as 297025 + 784996 = 545^2 + 886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1082021 - 2² = 1082017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1081987 and 1082005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1082023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176 + ... + 1481.

It is an arithmetic number, because the mean of its divisors is an integer number (271083).

2^1082021 is an apocalyptic number.

It is an amenable number.

1082021 is a deficient number, since it is larger than the sum of its proper divisors (2311).

1082021 is an equidigital number, since it uses as much as digits as its factorization.

1082021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310.

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

The square root of 1082021 is about 1040.2023841542. The cubic root of 1082021 is about 102.6625143558.

Adding to 1082021 its reverse (1202801), we get a palindrome (2284822).

The spelling of 1082021 in words is "one million, eighty-two thousand, twenty-one".