12020043 has 12 divisors (see below), whose sum is σ = 18643560. Its totient is φ = 6868512.

The previous prime is 12019993. The next prime is 12020051. The reversal of 12020043 is 34002021.

It is not a de Polignac number, because 12020043 - 2⁹ = 12019531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40738 + ... + 41031.

It is an arithmetic number, because the mean of its divisors is an integer number (1553630).

Almost surely, 2^12020043 is an apocalyptic number.

12020043 is a deficient number, since it is larger than the sum of its proper divisors (6623517).

12020043 is an equidigital number, since it uses as much as digits as its factorization.

12020043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81786 (or 81779 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 12020043 is about 3466.9933660162. The cubic root of 12020043 is about 229.0702415418.

Adding to 12020043 its reverse (34002021), we get a palindrome (46022064).

The spelling of 12020043 in words is "twelve million, twenty thousand, forty-three".