20132143 has 4 divisors (see below), whose sum is σ = 20227768. Its totient is φ = 20036520.

The previous prime is 20132129. The next prime is 20132149. The reversal of 20132143 is 34123102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20132143 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 (20132149) 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, 47496 + ... + 47917.

It is an arithmetic number, because the mean of its divisors is an integer number (5056942).

Almost surely, 2^20132143 is an apocalyptic number.

20132143 is a deficient number, since it is larger than the sum of its proper divisors (95625).

20132143 is an equidigital number, since it uses as much as digits as its factorization.

20132143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95624.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20132143 is about 4486.8856682559. The cubic root of 20132143 is about 272.0382686568.

Adding to 20132143 its reverse (34123102), we get a palindrome (54255245).

The spelling of 20132143 in words is "twenty million, one hundred thirty-two thousand, one hundred forty-three".