420454 has 8 divisors (see below), whose sum is σ = 645480. Its totient is φ = 205296.

The previous prime is 420439. The next prime is 420457. The reversal of 420454 is 454024.

420454 is nontrivially palindromic in base 16.

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

It is a super-2 number, since 2×420454² = 353563132232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420457) 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, 2359 + ... + 2530.

It is an arithmetic number, because the mean of its divisors is an integer number (80685).

2⁴²⁰⁴⁵⁴ is an apocalyptic number.

420454 is a deficient number, since it is larger than the sum of its proper divisors (225026).

420454 is a wasteful number, since it uses less digits than its factorization.

420454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4934.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 420454 is about 648.4242438404. The cubic root of 420454 is about 74.9156978701.

Adding to 420454 its reverse (454024), we get a palindrome (874478).

The spelling of 420454 in words is "four hundred twenty thousand, four hundred fifty-four".