120543111 has 24 divisors (see below), whose sum is σ = 193982880. Its totient is φ = 71620416.

The previous prime is 120543103. The next prime is 120543119. The reversal of 120543111 is 111345021.

120543111 is a `hidden beast` number, since 12 + 0 + 543 + 111 = 666.

It is an interprime number because it is at equal distance from previous prime (120543103) and next prime (120543119).

It is not a de Polignac number, because 120543111 - 2³ = 120543103 is a prime.

It is a super-3 number, since 3×120543111³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120543119) 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, 14371 + ... + 21156.

It is an arithmetic number, because the mean of its divisors is an integer number (8082620).

Almost surely, 2^120543111 is an apocalyptic number.

120543111 is a deficient number, since it is larger than the sum of its proper divisors (73439769).

120543111 is a wasteful number, since it uses less digits than its factorization.

120543111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35575 (or 35572 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 120543111 is about 10979.2126766904. The cubic root of 120543111 is about 493.9854211196.

Adding to 120543111 its reverse (111345021), we get a palindrome (231888132).

The spelling of 120543111 in words is "one hundred twenty million, five hundred forty-three thousand, one hundred eleven".