20140123443 has 96 divisors (see below), whose sum is σ = 33044094720. Its totient is φ = 10783872000.

The previous prime is 20140123439. The next prime is 20140123447. The reversal of 20140123443 is 34432104102.

It is an interprime number because it is at equal distance from previous prime (20140123439) and next prime (20140123447).

It is not a de Polignac number, because 20140123443 - 2² = 20140123439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20140123447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13598263 + ... + 13599743.

It is an arithmetic number, because the mean of its divisors is an integer number (344209320).

Almost surely, 2^20140123443 is an apocalyptic number.

20140123443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20140123443 is a deficient number, since it is larger than the sum of its proper divisors (12903971277).

20140123443 is a wasteful number, since it uses less digits than its factorization.

20140123443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601 (or 1578 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20140123443 its reverse (34432104102), we get a palindrome (54572227545).

The spelling of 20140123443 in words is "twenty billion, one hundred forty million, one hundred twenty-three thousand, four hundred forty-three".