1023206 has 4 divisors (see below), whose sum is σ = 1534812. Its totient is φ = 511602.

The previous prime is 1023203. The next prime is 1023221. The reversal of 1023206 is 6023201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023203) 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 as a sum of consecutive naturals, namely, 255800 + ... + 255803.

It is an arithmetic number, because the mean of its divisors is an integer number (383703).

2^1023206 is an apocalyptic number.

1023206 is a deficient number, since it is larger than the sum of its proper divisors (511606).

1023206 is an equidigital number, since it uses as much as digits as its factorization.

1023206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511605.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1023206 is about 1011.5364551018. The cubic root of 1023206 is about 100.7676257628.

Adding to 1023206 its reverse (6023201), we get a palindrome (7046407).

The spelling of 1023206 in words is "one million, twenty-three thousand, two hundred six".