2002420 has 24 divisors (see below), whose sum is σ = 4806144. Its totient is φ = 686496.

The previous prime is 2002417. The next prime is 2002453. The reversal of 2002420 is 242002.

2002420 = T₁₇₅ + T₁₇₆ + ... + T₂₅₈.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2002397 and 2002406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7012 + ... + 7291.

It is an arithmetic number, because the mean of its divisors is an integer number (200256).

2^2002420 is an apocalyptic number.

2002420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002420 is an abundant number, since it is smaller than the sum of its proper divisors (2803724).

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

2002420 is a wasteful number, since it uses less digits than its factorization.

2002420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14319 (or 14317 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 2002420 is about 1415.0689029160. The cubic root of 2002420 is about 126.0429013228.

Adding to 2002420 its reverse (242002), we get a palindrome (2244422).

The spelling of 2002420 in words is "two million, two thousand, four hundred twenty".