416421 has 20 divisors (see below), whose sum is σ = 640332. Its totient is φ = 269568.

The previous prime is 416419. The next prime is 416441. The reversal of 416421 is 124614.

It can be written as a sum of positive squares in 2 ways, for example, as 245025 + 171396 = 495^2 + 414^2 .

It is not a de Polignac number, because 416421 - 2¹ = 416419 is a prime.

416421 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 416394 and 416403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (416401) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4245 + ... + 4341.

2⁴¹⁶⁴²¹ is an apocalyptic number.

It is an amenable number.

416421 is a deficient number, since it is larger than the sum of its proper divisors (223911).

416421 is an equidigital number, since it uses as much as digits as its factorization.

416421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 153 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 416421 is about 645.3069037288. The cubic root of 416421 is about 74.6753971332.

The spelling of 416421 in words is "four hundred sixteen thousand, four hundred twenty-one".