120543109 has 4 divisors (see below), whose sum is σ = 123107904. Its totient is φ = 117978316.

The previous prime is 120543103. The next prime is 120543119. The reversal of 120543109 is 901345021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 901345021 = 1759 ⋅512419.

It is a cyclic number.

It is not a de Polignac number, because 120543109 - 2¹¹ = 120541061 is a prime.

It is a super-2 number, since 2×120543109² = 29061282254771762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120543103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1282327 + ... + 1282420.

It is an arithmetic number, because the mean of its divisors is an integer number (30776976).

Almost surely, 2^120543109 is an apocalyptic number.

It is an amenable number.

120543109 is a deficient number, since it is larger than the sum of its proper divisors (2564795).

120543109 is an equidigital number, since it uses as much as digits as its factorization.

120543109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564794.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 120543109 is about 10979.2125856092. The cubic root of 120543109 is about 493.9854183876.

The spelling of 120543109 in words is "one hundred twenty million, five hundred forty-three thousand, one hundred nine".