421675 has 12 divisors (see below), whose sum is σ = 531216. Its totient is φ = 332000.

The previous prime is 421661. The next prime is 421691. The reversal of 421675 is 576124.

It is not a de Polignac number, because 421675 - 2⁵ = 421643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2442 + ... + 2608.

It is an arithmetic number, because the mean of its divisors is an integer number (44268).

2⁴²¹⁶⁷⁵ is an apocalyptic number.

421675 is a deficient number, since it is larger than the sum of its proper divisors (109541).

421675 is a wasteful number, since it uses less digits than its factorization.

421675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 273 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 421675 is about 649.3650745151. The cubic root of 421675 is about 74.9881462748.

Adding to 421675 its reverse (576124), we get a palindrome (997799).

Subtracting 421675 from its reverse (576124), we obtain a square (154449 = 393²).

The spelling of 421675 in words is "four hundred twenty-one thousand, six hundred seventy-five".