421465 has 16 divisors (see below), whose sum is σ = 564480. Its totient is φ = 299520.

The previous prime is 421459. The next prime is 421469. The reversal of 421465 is 564124.

It is not a de Polignac number, because 421465 - 2⁵ = 421433 is a prime.

Its product of digits (960) is a multiple of the sum of its prime divisors (192).

It is not an unprimeable number, because it can be changed into a prime (421469) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4297 + ... + 4393.

It is an arithmetic number, because the mean of its divisors is an integer number (35280).

2⁴²¹⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

421465 is a deficient number, since it is larger than the sum of its proper divisors (143015).

421465 is a wasteful number, since it uses less digits than its factorization.

421465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192.

The product of its digits is 960, while the sum is 22.

The square root of 421465 is about 649.2033579704. The cubic root of 421465 is about 74.9756958287.

Adding to 421465 its reverse (564124), we get a palindrome (985589).

The spelling of 421465 in words is "four hundred twenty-one thousand, four hundred sixty-five".