12042445 has 8 divisors (see below), whose sum is σ = 14649336. Its totient is φ = 9501696.

The previous prime is 12042439. The next prime is 12042449. The reversal of 12042445 is 54424021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 84681 + 11957764 = 291^2 + 3458^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12042445 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12042449) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16132 + ... + 16861.

It is an arithmetic number, because the mean of its divisors is an integer number (1831167).

Almost surely, 2^12042445 is an apocalyptic number.

It is an amenable number.

12042445 is a deficient number, since it is larger than the sum of its proper divisors (2606891).

12042445 is an equidigital number, since it uses as much as digits as its factorization.

12042445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33071.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 12042445 is about 3470.2226153375. Note that the first 3 decimals coincide. The cubic root of 12042445 is about 229.2124608576.

Adding to 12042445 its reverse (54424021), we get a palindrome (66466466).

The spelling of 12042445 in words is "twelve million, forty-two thousand, four hundred forty-five".