420916 has 6 divisors (see below), whose sum is σ = 736610. Its totient is φ = 210456.

The previous prime is 420899. The next prime is 420919. The reversal of 420916 is 619024.

It can be written as a sum of positive squares in only one way, i.e., 417316 + 3600 = 646^2 + 60^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420919) by changing a digit.

420916 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52611 + ... + 52618.

2⁴²⁰⁹¹⁶ is an apocalyptic number.

It is an amenable number.

420916 is a deficient number, since it is larger than the sum of its proper divisors (315694).

420916 is a wasteful number, since it uses less digits than its factorization.

420916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105233 (or 105231 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 420916 is about 648.7803942784. The cubic root of 420916 is about 74.9431272545.

It can be divided in two parts, 4209 and 16, that added together give a square (4225 = 65²).

The spelling of 420916 in words is "four hundred twenty thousand, nine hundred sixteen".