420858 has 24 divisors (see below), whose sum is σ = 924768. Its totient is φ = 138312.

The previous prime is 420857. The next prime is 420859. The reversal of 420858 is 858024.

It is an interprime number because it is at equal distance from previous prime (420857) and next prime (420859).

It is not an unprimeable number, because it can be changed into a prime (420851) 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 11 ways as a sum of consecutive naturals, for example, 1741 + ... + 1967.

It is an arithmetic number, because the mean of its divisors is an integer number (38532).

2⁴²⁰⁸⁵⁸ is an apocalyptic number.

420858 is an abundant number, since it is smaller than the sum of its proper divisors (503910).

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

420858 is a wasteful number, since it uses less digits than its factorization.

420858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 420858 is about 648.7356934839. The cubic root of 420858 is about 74.9396848408.

The spelling of 420858 in words is "four hundred twenty thousand, eight hundred fifty-eight".