120042321 has 16 divisors (see below), whose sum is σ = 193682304. Its totient is φ = 64560384.

The previous prime is 120042311. The next prime is 120042347. The reversal of 120042321 is 123240021.

It is not a de Polignac number, because 120042321 - 2⁶ = 120042257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120042321.

It is not an unprimeable number, because it can be changed into a prime (120042311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167770 + ... + 168483.

It is an arithmetic number, because the mean of its divisors is an integer number (12105144).

Almost surely, 2^120042321 is an apocalyptic number.

It is an amenable number.

120042321 is a deficient number, since it is larger than the sum of its proper divisors (73639983).

120042321 is a wasteful number, since it uses less digits than its factorization.

120042321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336280.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 120042321 is about 10956.3826603492. The cubic root of 120042321 is about 493.3003928071.

Adding to 120042321 its reverse (123240021), we get a palindrome (243282342).

The spelling of 120042321 in words is "one hundred twenty million, forty-two thousand, three hundred twenty-one".