2120305 has 16 divisors (see below), whose sum is σ = 2923200. Its totient is φ = 1460160.

The previous prime is 2120303. The next prime is 2120309. The reversal of 2120305 is 5030212.

It is not a de Polignac number, because 2120305 - 2¹ = 2120303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120303) 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, 31 + ... + 2059.

It is an arithmetic number, because the mean of its divisors is an integer number (182700).

2^2120305 is an apocalyptic number.

It is an amenable number.

2120305 is a deficient number, since it is larger than the sum of its proper divisors (802895).

2120305 is a wasteful number, since it uses less digits than its factorization.

2120305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 2120305 is about 1456.1267115193. The cubic root of 2120305 is about 128.4693260522.

Adding to 2120305 its reverse (5030212), we get a palindrome (7150517).

The spelling of 2120305 in words is "two million, one hundred twenty thousand, three hundred five".