421575 has 48 divisors (see below), whose sum is σ = 880896. Its totient is φ = 172800.

The previous prime is 421559. The next prime is 421607. The reversal of 421575 is 575124.

It is not a de Polignac number, because 421575 - 2⁴ = 421559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5739 + ... + 5811.

It is an arithmetic number, because the mean of its divisors is an integer number (18352).

2⁴²¹⁵⁷⁵ is an apocalyptic number.

421575 is an abundant number, since it is smaller than the sum of its proper divisors (459321).

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

421575 is a wasteful number, since it uses less digits than its factorization.

421575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 99 counting only the distinct ones).

The product of its digits is 1400, while the sum is 24.

The square root of 421575 is about 649.2880716600. The cubic root of 421575 is about 74.9822180066.

Adding to 421575 its reverse (575124), we get a palindrome (996699).

The spelling of 421575 in words is "four hundred twenty-one thousand, five hundred seventy-five".