424541021 has 16 divisors (see below), whose sum is σ = 443127168. Its totient is φ = 406425600.

The previous prime is 424540999. The next prime is 424541027. The reversal of 424541021 is 120145424.

It is a cyclic number.

It is not a de Polignac number, because 424541021 - 2⁶ = 424540957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424541027) 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 15 ways as a sum of consecutive naturals, for example, 735485 + ... + 736061.

It is an arithmetic number, because the mean of its divisors is an integer number (27695448).

Almost surely, 2^424541021 is an apocalyptic number.

It is an amenable number.

424541021 is a deficient number, since it is larger than the sum of its proper divisors (18586147).

424541021 is a wasteful number, since it uses less digits than its factorization.

424541021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 424541021 is about 20604.3932451310. The cubic root of 424541021 is about 751.5765479695.

Adding to 424541021 its reverse (120145424), we get a palindrome (544686445).

The spelling of 424541021 in words is "four hundred twenty-four million, five hundred forty-one thousand, twenty-one".