20112402143 has 16 divisors (see below), whose sum is σ = 21391309440. Its totient is φ = 18909718528.

The previous prime is 20112402137. The next prime is 20112402173. The reversal of 20112402143 is 34120421102.

It is not a de Polignac number, because 20112402143 - 2⁴ = 20112402127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112402173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7304255 + ... + 7307007.

It is an arithmetic number, because the mean of its divisors is an integer number (1336956840).

Almost surely, 2^20112402143 is an apocalyptic number.

20112402143 is a deficient number, since it is larger than the sum of its proper divisors (1278907297).

20112402143 is an equidigital number, since it uses as much as digits as its factorization.

20112402143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291 (or 4257 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20112402143 its reverse (34120421102), we get a palindrome (54232823245).

The spelling of 20112402143 in words is "twenty billion, one hundred twelve million, four hundred two thousand, one hundred forty-three".