630442 has 8 divisors (see below), whose sum is σ = 955332. Its totient is φ = 312000.

The previous prime is 630433. The next prime is 630451. The reversal of 630442 is 244036.

It is an interprime number because it is at equal distance from previous prime (630433) and next prime (630451).

It can be written as a sum of positive squares in 2 ways, for example, as 625681 + 4761 = 791^2 + 69^2 .

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

It is an unprimeable number.

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, 1359 + ... + 1762.

2⁶³⁰⁴⁴² is an apocalyptic number.

630442 is a deficient number, since it is larger than the sum of its proper divisors (324890).

630442 is a wasteful number, since it uses less digits than its factorization.

630442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 630442 is about 794.0037783285. The cubic root of 630442 is about 85.7462322716.

Adding to 630442 its reverse (244036), we get a palindrome (874478).

The spelling of 630442 in words is "six hundred thirty thousand, four hundred forty-two".