1243085 has 8 divisors (see below), whose sum is σ = 1543320. Its totient is φ = 960064.

The previous prime is 1243013. The next prime is 1243093. The reversal of 1243085 is 5803421.

It can be written as a sum of positive squares in 4 ways, for example, as 72361 + 1170724 = 269^2 + 1082^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1243085 - 2¹⁰ = 1242061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1243085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4142 + ... + 4431.

It is an arithmetic number, because the mean of its divisors is an integer number (192915).

2^1243085 is an apocalyptic number.

It is an amenable number.

1243085 is a deficient number, since it is larger than the sum of its proper divisors (300235).

1243085 is an equidigital number, since it uses as much as digits as its factorization.

1243085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8607.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1243085 is about 1114.9372179634. The cubic root of 1243085 is about 107.5227282032.

The spelling of 1243085 in words is "one million, two hundred forty-three thousand, eighty-five".