2120355 has 12 divisors (see below), whose sum is σ = 3675360. Its totient is φ = 1130832.

The previous prime is 2120353. The next prime is 2120383. The reversal of 2120355 is 5530212.

It is a happy number.

It is not a de Polignac number, because 2120355 - 2¹ = 2120353 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2120351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23515 + ... + 23604.

It is an arithmetic number, because the mean of its divisors is an integer number (306280).

2^2120355 is an apocalyptic number.

2120355 is a deficient number, since it is larger than the sum of its proper divisors (1555005).

2120355 is a wasteful number, since it uses less digits than its factorization.

2120355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47130 (or 47127 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 2120355 is about 1456.1438802536. The cubic root of 2120355 is about 128.4703358779.

Adding to 2120355 its reverse (5530212), we get a palindrome (7650567).

The spelling of 2120355 in words is "two million, one hundred twenty thousand, three hundred fifty-five".