2009420 has 48 divisors (see below), whose sum is σ = 4988928. Its totient is φ = 665280.

The previous prime is 2009407. The next prime is 2009437. The reversal of 2009420 is 249002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4109 + ... + 4571.

It is an arithmetic number, because the mean of its divisors is an integer number (103936).

2^2009420 is an apocalyptic number.

2009420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2009420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2494464).

2009420 is an abundant number, since it is smaller than the sum of its proper divisors (2979508).

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

2009420 is a wasteful number, since it uses less digits than its factorization.

2009420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2009420 is about 1417.5401228889. The cubic root of 2009420 is about 126.1896028465.

The spelling of 2009420 in words is "two million, nine thousand, four hundred twenty".