420000681 has 8 divisors (see below), whose sum is σ = 589474720. Its totient is φ = 265263552.

The previous prime is 420000661. The next prime is 420000703. The reversal of 420000681 is 186000024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420000681 - 2¹⁵ = 419967913 is a prime.

It is a super-2 number, since 2×420000681² = 352801144080927522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (420000641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3684160 + ... + 3684273.

It is an arithmetic number, because the mean of its divisors is an integer number (73684340).

Almost surely, 2^420000681 is an apocalyptic number.

It is an amenable number.

420000681 is a deficient number, since it is larger than the sum of its proper divisors (169474039).

420000681 is a wasteful number, since it uses less digits than its factorization.

420000681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7368455.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 420000681 is about 20493.9181466112. The cubic root of 420000681 is about 748.8876434774.

The spelling of 420000681 in words is "four hundred twenty million, six hundred eighty-one", and thus it is an aban number.