420898 has 8 divisors (see below), whose sum is σ = 634140. Its totient is φ = 209520.

The previous prime is 420859. The next prime is 420899. The reversal of 420898 is 898024.

It can be written as a sum of positive squares in 2 ways, for example, as 405769 + 15129 = 637^2 + 123^2 .

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

It is not an unprimeable number, because it can be changed into a prime (420899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508 + ... + 1048.

2⁴²⁰⁸⁹⁸ is an apocalyptic number.

420898 is a deficient number, since it is larger than the sum of its proper divisors (213242).

420898 is a wasteful number, since it uses less digits than its factorization.

420898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 420898 is about 648.7665219476. The cubic root of 420898 is about 74.9420589530.

It can be divided in two parts, 4 and 20898, that added together give a palindrome (20902).

The spelling of 420898 in words is "four hundred twenty thousand, eight hundred ninety-eight".