2099420 has 12 divisors (see below), whose sum is σ = 4408824. Its totient is φ = 839760.

The previous prime is 2099411. The next prime is 2099431. The reversal of 2099420 is 249902.

It is a self number, because there is not a number n which added to its sum of digits gives 2099420.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52466 + ... + 52505.

It is an arithmetic number, because the mean of its divisors is an integer number (367402).

2^2099420 is an apocalyptic number.

2099420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2099420 is an abundant number, since it is smaller than the sum of its proper divisors (2309404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2099420 is a wasteful number, since it uses less digits than its factorization.

2099420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104980 (or 104978 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 2099420 is about 1448.9375417871. The cubic root of 2099420 is about 128.0461259542.

The spelling of 2099420 in words is "two million, ninety-nine thousand, four hundred twenty".