120340143 has 24 divisors (see below), whose sum is σ = 216717696. Its totient is φ = 62514000.

The previous prime is 120340139. The next prime is 120340151. The reversal of 120340143 is 341043021.

It is not a de Polignac number, because 120340143 - 2² = 120340139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120340183) 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 23 ways as a sum of consecutive naturals, for example, 86133 + ... + 87518.

It is an arithmetic number, because the mean of its divisors is an integer number (9029904).

Almost surely, 2^120340143 is an apocalyptic number.

120340143 is a deficient number, since it is larger than the sum of its proper divisors (96377553).

120340143 is a wasteful number, since it uses less digits than its factorization.

120340143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173675 (or 173672 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 120340143 is about 10969.9654967552. The cubic root of 120340143 is about 493.7080112133.

Adding to 120340143 its reverse (341043021), we get a palindrome (461383164).

The spelling of 120340143 in words is "one hundred twenty million, three hundred forty thousand, one hundred forty-three".