1856842 has 16 divisors (see below), whose sum is σ = 3176712. Its totient is φ = 806400.

The previous prime is 1856837. The next prime is 1856843. The reversal of 1856842 is 2486581.

It can be written as a sum of positive squares in 4 ways, for example, as 1062961 + 793881 = 1031^2 + 891^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 1856798 and 1856807.

It is not an unprimeable number, because it can be changed into a prime (1856843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1659 + ... + 2542.

2^1856842 is an apocalyptic number.

1856842 is a deficient number, since it is larger than the sum of its proper divisors (1319870).

1856842 is a wasteful number, since it uses less digits than its factorization.

1856842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233.

The product of its digits is 15360, while the sum is 34.

The square root of 1856842 is about 1362.6598988743. The cubic root of 1856842 is about 122.9112542032.

The spelling of 1856842 in words is "one million, eight hundred fifty-six thousand, eight hundred forty-two".