20412002143 has 4 divisors (see below), whose sum is σ = 21982156168. Its totient is φ = 18841848120.

The previous prime is 20412002129. The next prime is 20412002159. The reversal of 20412002143 is 34120021402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34120021402 = 2 ⋅17060010701.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20412002143 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 20412002143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412002543) 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, 785076993 + ... + 785077018.

It is an arithmetic number, because the mean of its divisors is an integer number (5495539042).

Almost surely, 2^20412002143 is an apocalyptic number.

20412002143 is a deficient number, since it is larger than the sum of its proper divisors (1570154025).

20412002143 is a wasteful number, since it uses less digits than its factorization.

20412002143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570154024.

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

Adding to 20412002143 its reverse (34120021402), we get a palindrome (54532023545).

The spelling of 20412002143 in words is "twenty billion, four hundred twelve million, two thousand, one hundred forty-three".