120020143 has 6 divisors (see below), whose sum is σ = 122330264. Its totient is φ = 117752856.

The previous prime is 120020129. The next prime is 120020171. The reversal of 120020143 is 341020021.

It is not a de Polignac number, because 120020143 - 2⁵ = 120020111 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 (120020113) 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 5 ways as a sum of consecutive naturals, for example, 18555 + ... + 24172.

Almost surely, 2^120020143 is an apocalyptic number.

120020143 is a deficient number, since it is larger than the sum of its proper divisors (2310121).

120020143 is an frugal number, since it uses more digits than its factorization.

120020143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42833 (or 42780 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 120020143 is about 10955.3705094807. The cubic root of 120020143 is about 493.2700116053.

Adding to 120020143 its reverse (341020021), we get a palindrome (461040164).

The spelling of 120020143 in words is "one hundred twenty million, twenty thousand, one hundred forty-three".