20124203 has 4 divisors (see below), whose sum is σ = 21953688. Its totient is φ = 18294720.

The previous prime is 20124197. The next prime is 20124217. The reversal of 20124203 is 30242102.

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

It is a cyclic number.

It is not a de Polignac number, because 20124203 - 2¹⁰ = 20123179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20124233) 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 3 ways as a sum of consecutive naturals, for example, 914726 + ... + 914747.

It is an arithmetic number, because the mean of its divisors is an integer number (5488422).

Almost surely, 2^20124203 is an apocalyptic number.

20124203 is a deficient number, since it is larger than the sum of its proper divisors (1829485).

20124203 is a wasteful number, since it uses less digits than its factorization.

20124203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829484.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20124203 is about 4486.0007802050. Note that the first 3 decimals coincide. The cubic root of 20124203 is about 272.0025005177.

Adding to 20124203 its reverse (30242102), we get a palindrome (50366305).

The spelling of 20124203 in words is "twenty million, one hundred twenty-four thousand, two hundred three".