120540861 has 48 divisors (see below), whose sum is σ = 212808960. Its totient is φ = 64247040.

The previous prime is 120540809. The next prime is 120540869. The reversal of 120540861 is 168045021.

It is not a de Polignac number, because 120540861 - 2⁹ = 120540349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120540869) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58395 + ... + 60423.

It is an arithmetic number, because the mean of its divisors is an integer number (4433520).

Almost surely, 2^120540861 is an apocalyptic number.

It is an amenable number.

120540861 is a deficient number, since it is larger than the sum of its proper divisors (92268099).

120540861 is a wasteful number, since it uses less digits than its factorization.

120540861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106 (or 2103 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 120540861 is about 10979.1102098485. The cubic root of 120540861 is about 493.9823476020.

Adding to 120540861 its reverse (168045021), we get a palindrome (288585882).

The spelling of 120540861 in words is "one hundred twenty million, five hundred forty thousand, eight hundred sixty-one".