20414143 has 4 divisors (see below), whose sum is σ = 20549488. Its totient is φ = 20278800.

The previous prime is 20414129. The next prime is 20414171. The reversal of 20414143 is 34141402.

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 20414143 - 2¹⁷ = 20283071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20414143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20414183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67446 + ... + 67747.

It is an arithmetic number, because the mean of its divisors is an integer number (5137372).

Almost surely, 2^20414143 is an apocalyptic number.

20414143 is a deficient number, since it is larger than the sum of its proper divisors (135345).

20414143 is a wasteful number, since it uses less digits than its factorization.

20414143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135344.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20414143 is about 4518.2013014030. The cubic root of 20414143 is about 273.3025712290.

Adding to 20414143 its reverse (34141402), we get a palindrome (54555545).

The spelling of 20414143 in words is "twenty million, four hundred fourteen thousand, one hundred forty-three".