20112143 has 8 divisors (see below), whose sum is σ = 21129216. Its totient is φ = 19107000.

The previous prime is 20112133. The next prime is 20112151. The reversal of 20112143 is 34121102.

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

It is a cyclic number.

It is not a de Polignac number, because 20112143 - 2¹⁴ = 20095759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112133) 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 7 ways as a sum of consecutive naturals, for example, 578 + ... + 6368.

It is an arithmetic number, because the mean of its divisors is an integer number (2641152).

Almost surely, 2^20112143 is an apocalyptic number.

20112143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20112143 is a deficient number, since it is larger than the sum of its proper divisors (1017073).

20112143 is a wasteful number, since it uses less digits than its factorization.

20112143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5965.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 20112143 is about 4484.6563970944. The cubic root of 20112143 is about 271.9481545865.

Adding to 20112143 its reverse (34121102), we get a palindrome (54233245).

The spelling of 20112143 in words is "twenty million, one hundred twelve thousand, one hundred forty-three".