842434 has 8 divisors (see below), whose sum is σ = 1268028. Its totient is φ = 419760.

The previous prime is 842423. The next prime is 842447. The reversal of 842434 is 434248.

842434 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 2 ways, for example, as 819025 + 23409 = 905^2 + 153^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 842399 and 842408.

It is an unprimeable number.

842434 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264 + ... + 1324.

2⁸⁴²⁴³⁴ is an apocalyptic number.

842434 is a deficient number, since it is larger than the sum of its proper divisors (425594).

842434 is a wasteful number, since it uses less digits than its factorization.

842434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460.

The product of its digits is 3072, while the sum is 25.

The square root of 842434 is about 917.8420343392. The cubic root of 842434 is about 94.4449255903. Note that the first 3 decimals are identical.

The spelling of 842434 in words is "eight hundred forty-two thousand, four hundred thirty-four".