2120007 has 4 divisors (see below), whose sum is σ = 2826680. Its totient is φ = 1413336.

The previous prime is 2119969. The next prime is 2120009. The reversal of 2120007 is 7000212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2120007 - 2⁷ = 2119879 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2119974 and 2120001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120009) 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, 353332 + ... + 353337.

It is an arithmetic number, because the mean of its divisors is an integer number (706670).

2^2120007 is an apocalyptic number.

2120007 is a deficient number, since it is larger than the sum of its proper divisors (706673).

2120007 is an equidigital number, since it uses as much as digits as its factorization.

2120007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706672.

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 2120007 is about 1456.0243816640. The cubic root of 2120007 is about 128.4633071614.

Adding to 2120007 its reverse (7000212), we get a palindrome (9120219).

The spelling of 2120007 in words is "two million, one hundred twenty thousand, seven".