1729242 has 32 divisors (see below), whose sum is σ = 3970560. Its totient is φ = 557280.

The previous prime is 1729237. The next prime is 1729249. The reversal of 1729242 is 2429271.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1729249) 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 15 ways as a sum of consecutive naturals, for example, 1158 + ... + 2190.

It is an arithmetic number, because the mean of its divisors is an integer number (124080).

2^1729242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1729242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1985280).

1729242 is an abundant number, since it is smaller than the sum of its proper divisors (2241318).

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

1729242 is a wasteful number, since it uses less digits than its factorization.

1729242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075 (or 1069 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1729242 is about 1315.0064638624. The cubic root of 1729242 is about 120.0287431147.

1729242 divided by its sum of digits (27) gives a palindrome (64046).

The spelling of 1729242 in words is "one million, seven hundred twenty-nine thousand, two hundred forty-two".