1789042 has 4 divisors (see below), whose sum is σ = 2683566. Its totient is φ = 894520.

The previous prime is 1789037. The next prime is 1789091. The reversal of 1789042 is 2409871.

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., 1766241 + 22801 = 1329^2 + 151^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1788995 and 1789013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447259 + ... + 447262.

2^1789042 is an apocalyptic number.

1789042 is a deficient number, since it is larger than the sum of its proper divisors (894524).

1789042 is an equidigital number, since it uses as much as digits as its factorization.

1789042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894523.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1789042 is about 1337.5507467008. The cubic root of 1789042 is about 121.3966899989.

The spelling of 1789042 in words is "one million, seven hundred eighty-nine thousand, forty-two".