1005424220 has 12 divisors (see below), whose sum is σ = 2111390904. Its totient is φ = 402169680.

The previous prime is 1005424213. The next prime is 1005424243. The reversal of 1005424220 is 224245001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 50271211 = 1005424220 / (1 + 0 + 0 + 5 + 4 + 2 + 4 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1005424192 and 1005424201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25135586 + ... + 25135625.

It is an arithmetic number, because the mean of its divisors is an integer number (175949242).

Almost surely, 2^1005424220 is an apocalyptic number.

1005424220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1005424220 is an abundant number, since it is smaller than the sum of its proper divisors (1105966684).

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

1005424220 is a wasteful number, since it uses less digits than its factorization.

1005424220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50271220 (or 50271218 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1005424220 is about 31708.4250633802. The cubic root of 1005424220 is about 1001.8048140200.

Adding to 1005424220 its reverse (224245001), we get a palindrome (1229669221).

The spelling of 1005424220 in words is "one billion, five million, four hundred twenty-four thousand, two hundred twenty".