426842 has 8 divisors (see below), whose sum is σ = 689556. Its totient is φ = 196992.

The previous prime is 426841. The next prime is 426859. The reversal of 426842 is 248624.

It can be written as a sum of positive squares in 2 ways, for example, as 383161 + 43681 = 619^2 + 209^2 .

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

It is a super-3 number, since 3×426842³ = 233304273086819064, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 16417 = 426842 / (4 + 2 + 6 + 8 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (426841) 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, 8183 + ... + 8234.

2⁴²⁶⁸⁴² is an apocalyptic number.

426842 is a deficient number, since it is larger than the sum of its proper divisors (262714).

426842 is a wasteful number, since it uses less digits than its factorization.

426842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16432.

The product of its digits is 3072, while the sum is 26.

The square root of 426842 is about 653.3314625824. The cubic root of 426842 is about 75.2931930847.

The spelling of 426842 in words is "four hundred twenty-six thousand, eight hundred forty-two".