420835 has 8 divisors (see below), whose sum is σ = 534816. Its totient is φ = 316800.

The previous prime is 420811. The next prime is 420851. The reversal of 420835 is 538024.

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

It is not a de Polignac number, because 420835 - 2⁵ = 420803 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2391 + ... + 2560.

It is an arithmetic number, because the mean of its divisors is an integer number (66852).

2⁴²⁰⁸³⁵ is an apocalyptic number.

420835 is a deficient number, since it is larger than the sum of its proper divisors (113981).

420835 is a wasteful number, since it uses less digits than its factorization.

420835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4973.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 420835 is about 648.7179664538. The cubic root of 420835 is about 74.9383196581.

Adding to 420835 its reverse (538024), we get a palindrome (958859).

The spelling of 420835 in words is "four hundred twenty thousand, eight hundred thirty-five".