730442 has 8 divisors (see below), whose sum is σ = 1099332. Its totient is φ = 364000.

The previous prime is 730421. The next prime is 730447. The reversal of 730442 is 244037.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 724201 + 6241 = 851^2 + 79^2 .

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

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (730447) 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, 692 + ... + 1392.

2⁷³⁰⁴⁴² is an apocalyptic number.

730442 is a deficient number, since it is larger than the sum of its proper divisors (368890).

730442 is a wasteful number, since it uses less digits than its factorization.

730442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 730442 is about 854.6589963254. The cubic root of 730442 is about 90.0593024798.

Adding to 730442 its reverse (244037), we get a palindrome (974479).

The spelling of 730442 in words is "seven hundred thirty thousand, four hundred forty-two".