120004821 has 24 divisors (see below), whose sum is σ = 180398400. Its totient is φ = 79719552.

The previous prime is 120004799. The next prime is 120004831. The reversal of 120004821 is 128400021.

It is not a de Polignac number, because 120004821 - 2⁷ = 120004693 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120004794 and 120004803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120004831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85080 + ... + 86478.

It is an arithmetic number, because the mean of its divisors is an integer number (7516600).

Almost surely, 2^120004821 is an apocalyptic number.

It is an amenable number.

120004821 is a deficient number, since it is larger than the sum of its proper divisors (60393579).

120004821 is an equidigital number, since it uses as much as digits as its factorization.

120004821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767 (or 1755 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 120004821 is about 10954.6711954307. The cubic root of 120004821 is about 493.2490201156.

Adding to 120004821 its reverse (128400021), we get a palindrome (248404842).

The spelling of 120004821 in words is "one hundred twenty million, four thousand, eight hundred twenty-one".