428842 has 8 divisors (see below), whose sum is σ = 681156. Its totient is φ = 201792.

The previous prime is 428833. The next prime is 428843. The reversal of 428842 is 248824.

It can be written as a sum of positive squares in 2 ways, for example, as 423801 + 5041 = 651^2 + 71^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 428842.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428843) 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, 6273 + ... + 6340.

2⁴²⁸⁸⁴² is an apocalyptic number.

428842 is a deficient number, since it is larger than the sum of its proper divisors (252314).

428842 is a wasteful number, since it uses less digits than its factorization.

428842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12632.

The product of its digits is 4096, while the sum is 28.

The square root of 428842 is about 654.8602904437. The cubic root of 428842 is about 75.4106071801.

The spelling of 428842 in words is "four hundred twenty-eight thousand, eight hundred forty-two".