12020045 has 4 divisors (see below), whose sum is σ = 14424060. Its totient is φ = 9616032.

The previous prime is 12019993. The next prime is 12020051. The reversal of 12020045 is 54002021.

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 4605316 + 7414729 = 2146^2 + 2723^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020045 - 2⁸ = 12019789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1202000 + ... + 1202009.

It is an arithmetic number, because the mean of its divisors is an integer number (3606015).

Almost surely, 2^12020045 is an apocalyptic number.

It is an amenable number.

12020045 is a deficient number, since it is larger than the sum of its proper divisors (2404015).

12020045 is an equidigital number, since it uses as much as digits as its factorization.

12020045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404014.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 12020045 is about 3466.9936544505. The cubic root of 12020045 is about 229.0702542467.

Adding to 12020045 its reverse (54002021), we get a palindrome (66022066).

The spelling of 12020045 in words is "twelve million, twenty thousand, forty-five".