2820120003 has 16 divisors (see below), whose sum is σ = 4312729600. Its totient is φ = 1819431720.

The previous prime is 2820119989. The next prime is 2820120007. The reversal of 2820120003 is 3000210282.

It is a happy number.

2820120003 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2820120003 - 2⁵ = 2820119971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2820120007) 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, 1683823 + ... + 1685496.

It is an arithmetic number, because the mean of its divisors is an integer number (269545600).

Almost surely, 2^2820120003 is an apocalyptic number.

2820120003 is a deficient number, since it is larger than the sum of its proper divisors (1492609597).

2820120003 is a wasteful number, since it uses less digits than its factorization.

2820120003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369359 (or 3369353 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2820120003 is about 53104.8020709992. The cubic root of 2820120003 is about 1412.8276844156.

Adding to 2820120003 its reverse (3000210282), we get a palindrome (5820330285).

The spelling of 2820120003 in words is "two billion, eight hundred twenty million, one hundred twenty thousand, three".