12072745 has 4 divisors (see below), whose sum is σ = 14487300. Its totient is φ = 9658192.

The previous prime is 12072743. The next prime is 12072763. The reversal of 12072745 is 54727021.

12072745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54727021 = 2273 ⋅24077.

It can be written as a sum of positive squares in 2 ways, for example, as 5817744 + 6255001 = 2412^2 + 2501^2 .

It is a cyclic number.

It is not a de Polignac number, because 12072745 - 2¹ = 12072743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12072743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1207270 + ... + 1207279.

It is an arithmetic number, because the mean of its divisors is an integer number (3621825).

Almost surely, 2^12072745 is an apocalyptic number.

It is an amenable number.

12072745 is a deficient number, since it is larger than the sum of its proper divisors (2414555).

12072745 is an equidigital number, since it uses as much as digits as its factorization.

12072745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414554.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 12072745 is about 3474.5855868002. The cubic root of 12072745 is about 229.4045403676.

Adding to 12072745 its reverse (54727021), we get a palindrome (66799766).

The spelling of 12072745 in words is "twelve million, seventy-two thousand, seven hundred forty-five".