1024420221 has 48 divisors (see below), whose sum is σ = 1755494208. Its totient is φ = 568512000.

The previous prime is 1024420217. The next prime is 1024420303. The reversal of 1024420221 is 1220244201.

1024420221 is a `hidden beast` number, since 1 + 0 + 2 + 442 + 0 + 221 = 666.

It is not a de Polignac number, because 1024420221 - 2² = 1024420217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1024420194 and 1024420203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1024420211) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 54046 + ... + 70496.

It is an arithmetic number, because the mean of its divisors is an integer number (36572796).

Almost surely, 2^1024420221 is an apocalyptic number.

1024420221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1024420221 is a deficient number, since it is larger than the sum of its proper divisors (731073987).

1024420221 is a wasteful number, since it uses less digits than its factorization.

1024420221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16522 (or 16519 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1024420221 is about 32006.5652796422. The cubic root of 1024420221 is about 1008.0746974359.

Adding to 1024420221 its reverse (1220244201), we get a palindrome (2244664422).

The spelling of 1024420221 in words is "one billion, twenty-four million, four hundred twenty thousand, two hundred twenty-one".