816242 has 12 divisors (see below), whose sum is σ = 1424430. Its totient is φ = 349776.

The previous prime is 816239. The next prime is 816251. The reversal of 816242 is 242618.

816242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 790321 + 25921 = 889^2 + 161^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4067 + ... + 4262.

2⁸¹⁶²⁴² is an apocalyptic number.

816242 is a deficient number, since it is larger than the sum of its proper divisors (608188).

816242 is a wasteful number, since it uses less digits than its factorization.

816242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8345 (or 8338 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 816242 is about 903.4611225725. The cubic root of 816242 is about 93.4558114282.

The spelling of 816242 in words is "eight hundred sixteen thousand, two hundred forty-two".