421458 has 16 divisors (see below), whose sum is σ = 887520. Its totient is φ = 133056.

The previous prime is 421453. The next prime is 421459. The reversal of 421458 is 854124.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421453) 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, 1735 + ... + 1962.

It is an arithmetic number, because the mean of its divisors is an integer number (55470).

2⁴²¹⁴⁵⁸ is an apocalyptic number.

421458 is an abundant number, since it is smaller than the sum of its proper divisors (466062).

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

421458 is a wasteful number, since it uses less digits than its factorization.

421458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721.

The product of its digits is 1280, while the sum is 24.

The square root of 421458 is about 649.1979667251. The cubic root of 421458 is about 74.9752807426.

The spelling of 421458 in words is "four hundred twenty-one thousand, four hundred fifty-eight".