12020745 has 48 divisors (see below), whose sum is σ = 21833280. Its totient is φ = 5639040.

The previous prime is 12020741. The next prime is 12020759. The reversal of 12020745 is 54702021.

12020745 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12020745 - 2² = 12020741 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12020741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67066 + ... + 67244.

It is an arithmetic number, because the mean of its divisors is an integer number (454860).

Almost surely, 2^12020745 is an apocalyptic number.

12020745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12020745 is a deficient number, since it is larger than the sum of its proper divisors (9812535).

12020745 is a wasteful number, since it uses less digits than its factorization.

12020745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 12020745 is about 3467.0946049971. The cubic root of 12020745 is about 229.0747008764.

Adding to 12020745 its reverse (54702021), we get a palindrome (66722766).

The spelling of 12020745 in words is "twelve million, twenty thousand, seven hundred forty-five".