1223743 has 6 divisors (see below), whose sum is σ = 1247064. Its totient is φ = 1200744.

The previous prime is 1223731. The next prime is 1223749. The reversal of 1223743 is 3473221.

It is not a de Polignac number, because 1223743 - 2⁹ = 1223231 is a prime.

It is a Duffinian number.

1223743 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11173 + ... + 11281.

It is an arithmetic number, because the mean of its divisors is an integer number (207844).

2^1223743 is an apocalyptic number.

1223743 is a deficient number, since it is larger than the sum of its proper divisors (23321).

1223743 is an equidigital number, since it uses as much as digits as its factorization.

1223743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 212 counting only the distinct ones).

The product of its digits is 1008, while the sum is 22.

The square root of 1223743 is about 1106.2291805951. The cubic root of 1223743 is about 106.9621375922.

Adding to 1223743 its reverse (3473221), we get a palindrome (4696964).

The spelling of 1223743 in words is "one million, two hundred twenty-three thousand, seven hundred forty-three".