1728148042 has 8 divisors (see below), whose sum is σ = 2603542500. Its totient is φ = 860300544.

The previous prime is 1728148031. The next prime is 1728148043. The reversal of 1728148042 is 2408418271.

It is a happy number.

It is a Cunningham number, because it is equal to 41571²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 1728148041 + 1 = 41571^2 + 1^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1728147992 and 1728148010.

It is not an unprimeable number, because it can be changed into a prime (1728148043) by changing a digit.

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, 1886167 + ... + 1887082.

Almost surely, 2^1728148042 is an apocalyptic number.

1728148042 is a deficient number, since it is larger than the sum of its proper divisors (875394458).

1728148042 is a wasteful number, since it uses less digits than its factorization.

1728148042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3773480.

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 1728148042 is about 41571.0000120276. Note that the first 4 decimals coincide. The cubic root of 1728148042 is about 1200.0342680029.

The spelling of 1728148042 in words is "one billion, seven hundred twenty-eight million, one hundred forty-eight thousand, forty-two".