1223085 has 16 divisors (see below), whose sum is σ = 1987776. Its totient is φ = 642048.

The previous prime is 1223083. The next prime is 1223093. The reversal of 1223085 is 5803221.

It is not a de Polignac number, because 1223085 - 2¹ = 1223083 is a prime.

1223085 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223083) 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 15 ways as a sum of consecutive naturals, for example, 397 + ... + 1613.

It is an arithmetic number, because the mean of its divisors is an integer number (124236).

2^1223085 is an apocalyptic number.

1223085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1223085 is a deficient number, since it is larger than the sum of its proper divisors (764691).

1223085 is a wasteful number, since it uses less digits than its factorization.

1223085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1223085 is about 1105.9317338787. The cubic root of 1223085 is about 106.9429631673.

The spelling of 1223085 in words is "one million, two hundred twenty-three thousand, eighty-five".