4086842 has 4 divisors (see below), whose sum is σ = 6130266. Its totient is φ = 2043420.

The previous prime is 4086833. The next prime is 4086853. The reversal of 4086842 is 2486804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4084441 + 2401 = 2021^2 + 49^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4086799 and 4086808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021709 + ... + 1021712.

Almost surely, 2^4086842 is an apocalyptic number.

4086842 is a deficient number, since it is larger than the sum of its proper divisors (2043424).

4086842 is a wasteful number, since it uses less digits than its factorization.

4086842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043423.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 4086842 is about 2021.5939255944. The cubic root of 4086842 is about 159.8806662270.

The spelling of 4086842 in words is "four million, eighty-six thousand, eight hundred forty-two".