842426 has 8 divisors (see below), whose sum is σ = 1360884. Its totient is φ = 388800.

The previous prime is 842423. The next prime is 842447. The reversal of 842426 is 624248.

It can be written as a sum of positive squares in 2 ways, for example, as 811801 + 30625 = 901^2 + 175^2 .

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

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: 32401 = 842426 / (8 + 4 + 2 + 4 + 2 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 842395 and 842404.

It is not an unprimeable number, because it can be changed into a prime (842423) 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, 16175 + ... + 16226.

2⁸⁴²⁴²⁶ is an apocalyptic number.

842426 is a deficient number, since it is larger than the sum of its proper divisors (518458).

842426 is a wasteful number, since it uses less digits than its factorization.

842426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32416.

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

The square root of 842426 is about 917.8376762805. The cubic root of 842426 is about 94.4446266304. Note that the first 3 decimals are identical.

It can be divided in two parts, 84242 and 6, that added together give a palindrome (84248).

The spelling of 842426 in words is "eight hundred forty-two thousand, four hundred twenty-six".