1084021 has 4 divisors (see below), whose sum is σ = 1086912. Its totient is φ = 1081132.

The previous prime is 1084019. The next prime is 1084043. The reversal of 1084021 is 1204801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1084021 - 2¹ = 1084019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1083986 and 1084004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1084001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781 + ... + 1666.

It is an arithmetic number, because the mean of its divisors is an integer number (271728).

2^1084021 is an apocalyptic number.

It is an amenable number.

1084021 is a deficient number, since it is larger than the sum of its proper divisors (2891).

1084021 is an equidigital number, since it uses as much as digits as its factorization.

1084021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1084021 is about 1041.1632917079. The cubic root of 1084021 is about 102.7257289796.

Adding to 1084021 its reverse (1204801), we get a palindrome (2288822).

The spelling of 1084021 in words is "one million, eighty-four thousand, twenty-one".