424885721 has 16 divisors (see below), whose sum is σ = 473561088. Its totient is φ = 378561600.

The previous prime is 424885717. The next prime is 424885753. The reversal of 424885721 is 127588424.

It is a cyclic number.

It is not a de Polignac number, because 424885721 - 2² = 424885717 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (424885121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184640 + ... + 186926.

It is an arithmetic number, because the mean of its divisors is an integer number (29597568).

Almost surely, 2^424885721 is an apocalyptic number.

It is an amenable number.

424885721 is a deficient number, since it is larger than the sum of its proper divisors (48675367).

424885721 is a wasteful number, since it uses less digits than its factorization.

424885721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2792.

The product of its digits is 143360, while the sum is 41.

The square root of 424885721 is about 20612.7562688739. The cubic root of 424885721 is about 751.7799035459.

The spelling of 424885721 in words is "four hundred twenty-four million, eight hundred eighty-five thousand, seven hundred twenty-one".