421416 has 32 divisors (see below), whose sum is σ = 1171200. Its totient is φ = 140400.

The previous prime is 421409. The next prime is 421417. The reversal of 421416 is 614124.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (421417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 760 + ... + 1191.

It is an arithmetic number, because the mean of its divisors is an integer number (36600).

2⁴²¹⁴¹⁶ is an apocalyptic number.

It is an amenable number.

421416 is an abundant number, since it is smaller than the sum of its proper divisors (749784).

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

421416 is a wasteful number, since it uses less digits than its factorization.

421416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966 (or 1956 counting only the distinct ones).

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

The square root of 421416 is about 649.1656183132. The cubic root of 421416 is about 74.9727901295.

The spelling of 421416 in words is "four hundred twenty-one thousand, four hundred sixteen".