2120361 has 4 divisors (see below), whose sum is σ = 2827152. Its totient is φ = 1413572.

The previous prime is 2120353. The next prime is 2120383. The reversal of 2120361 is 1630212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2120361 - 2³ = 2120353 is a prime.

It is a D-number.

2120361 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120361.

It is not an unprimeable number, because it can be changed into a prime (2120341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353391 + ... + 353396.

It is an arithmetic number, because the mean of its divisors is an integer number (706788).

2^2120361 is an apocalyptic number.

It is an amenable number.

2120361 is a deficient number, since it is larger than the sum of its proper divisors (706791).

2120361 is an equidigital number, since it uses as much as digits as its factorization.

2120361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706790.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2120361 is about 1456.1459404881. The cubic root of 2120361 is about 128.4704570560.

Adding to 2120361 its reverse (1630212), we get a palindrome (3750573).

The spelling of 2120361 in words is "two million, one hundred twenty thousand, three hundred sixty-one".