20200124543 has 4 divisors (see below), whose sum is σ = 20345449320. Its totient is φ = 20054799768.

The previous prime is 20200124471. The next prime is 20200124617. The reversal of 20200124543 is 34542100202.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20200124543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200126543) 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 3 ways as a sum of consecutive naturals, for example, 72662180 + ... + 72662457.

It is an arithmetic number, because the mean of its divisors is an integer number (5086362330).

Almost surely, 2^20200124543 is an apocalyptic number.

20200124543 is a deficient number, since it is larger than the sum of its proper divisors (145324777).

20200124543 is a wasteful number, since it uses less digits than its factorization.

20200124543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145324776.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 20200124543 its reverse (34542100202), we get a palindrome (54742224745).

The spelling of 20200124543 in words is "twenty billion, two hundred million, one hundred twenty-four thousand, five hundred forty-three".