2123807 has 12 divisors (see below), whose sum is σ = 2503440. Its totient is φ = 1796256.

The previous prime is 2123791. The next prime is 2123831. The reversal of 2123807 is 7083212.

It is not a de Polignac number, because 2123807 - 2⁴ = 2123791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123867) 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, 4118 + ... + 4604.

It is an arithmetic number, because the mean of its divisors is an integer number (208620).

2^2123807 is an apocalyptic number.

2123807 is a deficient number, since it is larger than the sum of its proper divisors (379633).

2123807 is an equidigital number, since it uses as much as digits as its factorization.

2123807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2123807 is about 1457.3287206392. The cubic root of 2123807 is about 128.5400159002.

The spelling of 2123807 in words is "two million, one hundred twenty-three thousand, eight hundred seven".