819242 has 8 divisors (see below), whose sum is σ = 1293600. Its totient is φ = 388044.

The previous prime is 819241. The next prime is 819251. The reversal of 819242 is 242918.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 8⁵ + 1 + 2⁵ + 9 + 4⁹ + 2¹⁹ .

It is not an unprimeable number, because it can be changed into a prime (819241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10742 + ... + 10817.

It is an arithmetic number, because the mean of its divisors is an integer number (161700).

2⁸¹⁹²⁴² is an apocalyptic number.

819242 is a deficient number, since it is larger than the sum of its proper divisors (474358).

819242 is a wasteful number, since it uses less digits than its factorization.

819242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21580.

The product of its digits is 1152, while the sum is 26.

The square root of 819242 is about 905.1198815627. The cubic root of 819242 is about 93.5701666677.

The spelling of 819242 in words is "eight hundred nineteen thousand, two hundred forty-two".