784042 has 8 divisors (see below), whose sum is σ = 1344096. Its totient is φ = 336012.

The previous prime is 784039. The next prime is 784061. The reversal of 784042 is 240487.

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

It is a super-2 number, since 2×784042² = 1229443715528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 783998 and 784016.

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 in 3 ways as a sum of consecutive naturals, for example, 27988 + ... + 28015.

It is an arithmetic number, because the mean of its divisors is an integer number (168012).

2⁷⁸⁴⁰⁴² is an apocalyptic number.

784042 is a deficient number, since it is larger than the sum of its proper divisors (560054).

784042 is a wasteful number, since it uses less digits than its factorization.

784042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56012.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 784042 is about 885.4614616120. The cubic root of 784042 is about 92.2103723962.

The spelling of 784042 in words is "seven hundred eighty-four thousand, forty-two".