420398 has 16 divisors (see below), whose sum is σ = 698544. Its totient is φ = 188160.

The previous prime is 420397. The next prime is 420419. The reversal of 420398 is 893024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2036 + ... + 2232.

It is an arithmetic number, because the mean of its divisors is an integer number (43659).

2⁴²⁰³⁹⁸ is an apocalyptic number.

420398 is a deficient number, since it is larger than the sum of its proper divisors (278146).

420398 is a wasteful number, since it uses less digits than its factorization.

420398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 420398 is about 648.3810607968. The cubic root of 420398 is about 74.9123717311.

It can be divided in two parts, 420 and 398, that added together give a palindrome (818).

The spelling of 420398 in words is "four hundred twenty thousand, three hundred ninety-eight".