424002020 has 24 divisors (see below), whose sum is σ = 958897464. Its totient is φ = 156554496.

The previous prime is 424002017. The next prime is 424002041. The reversal of 424002020 is 20200424.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 90136036 + 333865984 = 9494^2 + 18272^2 .

It is a junction number, because it is equal to n+sod(n) for n = 424001986 and 424002004.

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, 815129 + ... + 815648.

It is an arithmetic number, because the mean of its divisors is an integer number (39954061).

Almost surely, 2^424002020 is an apocalyptic number.

It is an amenable number.

424002020 is an abundant number, since it is smaller than the sum of its proper divisors (534895444).

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

424002020 is a wasteful number, since it uses less digits than its factorization.

424002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630799 (or 1630797 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 424002020 is about 20591.3093318516. The cubic root of 424002020 is about 751.2583438765.

Adding to 424002020 its reverse (20200424), we get a palindrome (444202444).

The spelling of 424002020 in words is "four hundred twenty-four million, two thousand, twenty".