1684942 has 16 divisors (see below), whose sum is σ = 2937312. Its totient is φ = 709920.

The previous prime is 1684937. The next prime is 1684951. The reversal of 1684942 is 2494861.

It is a junction number, because it is equal to n+sod(n) for n = 1684898 and 1684907.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 133 + ... + 1840.

It is an arithmetic number, because the mean of its divisors is an integer number (183582).

2^1684942 is an apocalyptic number.

1684942 is a deficient number, since it is larger than the sum of its proper divisors (1252370).

1684942 is a wasteful number, since it uses less digits than its factorization.

1684942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043.

The product of its digits is 13824, while the sum is 34.

The square root of 1684942 is about 1298.0531576172. The cubic root of 1684942 is about 118.9948918552.

The spelling of 1684942 in words is "one million, six hundred eighty-four thousand, nine hundred forty-two".