1123207 has 4 divisors (see below), whose sum is σ = 1189296. Its totient is φ = 1057120.

The previous prime is 1123189. The next prime is 1123211. The reversal of 1123207 is 7023211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1123207 - 2⁷ = 1123079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123217) 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, 33019 + ... + 33052.

It is an arithmetic number, because the mean of its divisors is an integer number (297324).

2^1123207 is an apocalyptic number.

1123207 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1123207 is a deficient number, since it is larger than the sum of its proper divisors (66089).

1123207 is an equidigital number, since it uses as much as digits as its factorization.

1123207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66088.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 1123207 is about 1059.8146064289. The cubic root of 1123207 is about 103.9489085833.

Adding to 1123207 its reverse (7023211), we get a palindrome (8146418).

The spelling of 1123207 in words is "one million, one hundred twenty-three thousand, two hundred seven".