1223235 has 64 divisors (see below), whose sum is σ = 2540160. Its totient is φ = 552960.

The previous prime is 1223231. The next prime is 1223237. The reversal of 1223235 is 5323221.

It is a Cunningham number, because it is equal to 1106²-1.

It is not a de Polignac number, because 1223235 - 2² = 1223231 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29815 + ... + 29855.

It is an arithmetic number, because the mean of its divisors is an integer number (39690).

2^1223235 is an apocalyptic number.

1223235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1223235 is an abundant number, since it is smaller than the sum of its proper divisors (1316925).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223235 is a wasteful number, since it uses less digits than its factorization.

1223235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 79 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 1223235 is about 1105.9995479203. Note that the first 3 decimals coincide. The cubic root of 1223235 is about 106.9473348419.

Adding to 1223235 its reverse (5323221), we get a palindrome (6546456).

The spelling of 1223235 in words is "one million, two hundred twenty-three thousand, two hundred thirty-five".