420868 has 12 divisors (see below), whose sum is σ = 841792. Its totient is φ = 180360.

The previous prime is 420859. The next prime is 420899. The reversal of 420868 is 868024.

420868 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

420868 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 15031 = 420868 / (4 + 2 + 0 + 8 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

420868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7488 + ... + 7543.

2⁴²⁰⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

420868 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420868 is a wasteful number, since it uses less digits than its factorization.

420868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15042 (or 15040 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 420868 is about 648.7434007371. The cubic root of 420868 is about 74.9402783829.

The spelling of 420868 in words is "four hundred twenty thousand, eight hundred sixty-eight".