20112043 has 4 divisors (see below), whose sum is σ = 22985200. Its totient is φ = 17238888.

The previous prime is 20112031. The next prime is 20112061. The reversal of 20112043 is 34021102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34021102 = 2 ⋅17010551.

It is a cyclic number.

It is not a de Polignac number, because 20112043 - 2²¹ = 18014891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20112023) 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 3 ways as a sum of consecutive naturals, for example, 1436568 + ... + 1436581.

It is an arithmetic number, because the mean of its divisors is an integer number (5746300).

Almost surely, 2^20112043 is an apocalyptic number.

20112043 is a deficient number, since it is larger than the sum of its proper divisors (2873157).

20112043 is an equidigital number, since it uses as much as digits as its factorization.

20112043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873156.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20112043 is about 4484.6452479544. The cubic root of 20112043 is about 271.9477038660.

Adding to 20112043 its reverse (34021102), we get a palindrome (54133145).

The spelling of 20112043 in words is "twenty million, one hundred twelve thousand, forty-three".