421548 has 12 divisors (see below), whose sum is σ = 983640. Its totient is φ = 140512.

The previous prime is 421517. The next prime is 421559. The reversal of 421548 is 845124.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

421548 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17553 + ... + 17576.

It is an arithmetic number, because the mean of its divisors is an integer number (81970).

2⁴²¹⁵⁴⁸ is an apocalyptic number.

It is an amenable number.

421548 is an abundant number, since it is smaller than the sum of its proper divisors (562092).

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

421548 is a wasteful number, since it uses less digits than its factorization.

421548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35136 (or 35134 counting only the distinct ones).

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

The square root of 421548 is about 649.2672793234. The cubic root of 421548 is about 74.9806172134.

It can be divided in two parts, 421 and 548, that added together give a palindrome (969).

The spelling of 421548 in words is "four hundred twenty-one thousand, five hundred forty-eight".