1223735 has 4 divisors (see below), whose sum is σ = 1468488. Its totient is φ = 978984.

The previous prime is 1223731. The next prime is 1223749. The reversal of 1223735 is 5373221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5373221 = 7 ⋅767603.

It is a cyclic number.

It is not a de Polignac number, because 1223735 - 2² = 1223731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223731) 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, 122369 + ... + 122378.

It is an arithmetic number, because the mean of its divisors is an integer number (367122).

2^1223735 is an apocalyptic number.

1223735 is a deficient number, since it is larger than the sum of its proper divisors (244753).

1223735 is an equidigital number, since it uses as much as digits as its factorization.

1223735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244752.

The product of its digits is 1260, while the sum is 23.

The square root of 1223735 is about 1106.2255647019. The cubic root of 1223735 is about 106.9619045098.

Adding to 1223735 its reverse (5373221), we get a palindrome (6596956).

The spelling of 1223735 in words is "one million, two hundred twenty-three thousand, seven hundred thirty-five".