1022305 has 4 divisors (see below), whose sum is σ = 1226772. Its totient is φ = 817840.

The previous prime is 1022303. The next prime is 1022341. The reversal of 1022305 is 5032201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 446224 + 576081 = 668^2 + 759^2 .

It is not a de Polignac number, because 1022305 - 2¹ = 1022303 is a prime.

It is a Duffinian number.

1022305 is a lucky number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1022303) 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 3 ways as a sum of consecutive naturals, for example, 102226 + ... + 102235.

It is an arithmetic number, because the mean of its divisors is an integer number (306693).

2^1022305 is an apocalyptic number.

It is an amenable number.

1022305 is a deficient number, since it is larger than the sum of its proper divisors (204467).

1022305 is an equidigital number, since it uses as much as digits as its factorization.

1022305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204466.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 1022305 is about 1011.0909949159. The cubic root of 1022305 is about 100.7380395755.

Adding to 1022305 its reverse (5032201), we get a palindrome (6054506).

The spelling of 1022305 in words is "one million, twenty-two thousand, three hundred five".