120649143 has 4 divisors (see below), whose sum is σ = 160865528. Its totient is φ = 80432760.

The previous prime is 120649129. The next prime is 120649171. The reversal of 120649143 is 341946021.

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

It is not a de Polignac number, because 120649143 - 2⁸ = 120648887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120649143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120649103) 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, 20108188 + ... + 20108193.

It is an arithmetic number, because the mean of its divisors is an integer number (40216382).

Almost surely, 2^120649143 is an apocalyptic number.

120649143 is a deficient number, since it is larger than the sum of its proper divisors (40216385).

120649143 is an equidigital number, since it uses as much as digits as its factorization.

120649143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40216384.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 120649143 is about 10984.0403768377. The cubic root of 120649143 is about 494.1302183118.

The spelling of 120649143 in words is "one hundred twenty million, six hundred forty-nine thousand, one hundred forty-three".