12240785 has 4 divisors (see below), whose sum is σ = 14688948. Its totient is φ = 9792624.

The previous prime is 12240779. The next prime is 12240803. The reversal of 12240785 is 58704221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3952144 + 8288641 = 1988^2 + 2879^2 .

It is a cyclic number.

It is not a de Polignac number, because 12240785 - 2¹² = 12236689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1224074 + ... + 1224083.

It is an arithmetic number, because the mean of its divisors is an integer number (3672237).

Almost surely, 2^12240785 is an apocalyptic number.

It is an amenable number.

12240785 is a deficient number, since it is larger than the sum of its proper divisors (2448163).

12240785 is an equidigital number, since it uses as much as digits as its factorization.

12240785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448162.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 12240785 is about 3498.6833237662. The cubic root of 12240785 is about 230.4639971499.

The spelling of 12240785 in words is "twelve million, two hundred forty thousand, seven hundred eighty-five".