1728142 has 8 divisors (see below), whose sum is σ = 2791656. Its totient is φ = 797592.

The previous prime is 1728121. The next prime is 1728149. The reversal of 1728142 is 2418271.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33208 + ... + 33259.

It is an arithmetic number, because the mean of its divisors is an integer number (348957).

2^1728142 is an apocalyptic number.

1728142 is a deficient number, since it is larger than the sum of its proper divisors (1063514).

1728142 is a wasteful number, since it uses less digits than its factorization.

1728142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66482.

The product of its digits is 896, while the sum is 25.

The square root of 1728142 is about 1314.5881484328. The cubic root of 1728142 is about 120.0032869470.

The spelling of 1728142 in words is "one million, seven hundred twenty-eight thousand, one hundred forty-two".