1728042 has 8 divisors (see below), whose sum is σ = 3456096. Its totient is φ = 576012.

The previous prime is 1728019. The next prime is 1728043. The reversal of 1728042 is 2408271.

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

1728042 is an admirable number.

It is a super-2 number, since 2×1728042² = 5972258307528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1728043) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 143998 + ... + 144009.

It is an arithmetic number, because the mean of its divisors is an integer number (432012).

2^1728042 is an apocalyptic number.

1728042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1728042 is a wasteful number, since it uses less digits than its factorization.

1728042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288012.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 1728042 is about 1314.5501131566. The cubic root of 1728042 is about 120.0009722143. Note that the first 3 decimals are identical.

The spelling of 1728042 in words is "one million, seven hundred twenty-eight thousand, forty-two".