424041021 has 16 divisors (see below), whose sum is σ = 628859520. Its totient is φ = 282401280.

The previous prime is 424041019. The next prime is 424041151. The reversal of 424041021 is 120140424.

It is not a de Polignac number, because 424041021 - 2¹ = 424041019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 424040985 and 424041003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424041001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20221 + ... + 35453.

It is an arithmetic number, because the mean of its divisors is an integer number (39303720).

Almost surely, 2^424041021 is an apocalyptic number.

It is an amenable number.

424041021 is a deficient number, since it is larger than the sum of its proper divisors (204818499).

424041021 is a wasteful number, since it uses less digits than its factorization.

424041021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16273 (or 16267 counting only the distinct ones).

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

The square root of 424041021 is about 20592.2563358171. The cubic root of 424041021 is about 751.2813775154.

Adding to 424041021 its reverse (120140424), we get a palindrome (544181445).

The spelling of 424041021 in words is "four hundred twenty-four million, forty-one thousand, twenty-one".