20006043 has 8 divisors (see below), whose sum is σ = 26974800. Its totient is φ = 13187328.

The previous prime is 20006023. The next prime is 20006047. The reversal of 20006043 is 34060002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20006043 - 2¹⁷ = 19874971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20006047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37198 + ... + 37731.

It is an arithmetic number, because the mean of its divisors is an integer number (3371850).

Almost surely, 2^20006043 is an apocalyptic number.

20006043 is a deficient number, since it is larger than the sum of its proper divisors (6968757).

20006043 is an equidigital number, since it uses as much as digits as its factorization.

20006043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75021.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20006043 is about 4472.8115319114. The cubic root of 20006043 is about 271.4690976159.

Adding to 20006043 its reverse (34060002), we get a palindrome (54066045).

The spelling of 20006043 in words is "twenty million, six thousand, forty-three".