635242 has 4 divisors (see below), whose sum is σ = 952866. Its totient is φ = 317620.

The previous prime is 635207. The next prime is 635249. The reversal of 635242 is 242536.

It is a happy number.

635242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 609961 + 25281 = 781^2 + 159^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 6² + 3² + 2¹⁵ + 5⁷ + 4² + 2¹⁹ .

It is not an unprimeable number, because it can be changed into a prime (635249) by changing a digit.

635242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158809 + ... + 158812.

2⁶³⁵²⁴² is an apocalyptic number.

635242 is a deficient number, since it is larger than the sum of its proper divisors (317624).

635242 is a wasteful number, since it uses less digits than its factorization.

635242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317623.

The product of its digits is 1440, while the sum is 22.

The square root of 635242 is about 797.0207023660. The cubic root of 635242 is about 85.9632978417.

Adding to 635242 its reverse (242536), we get a palindrome (877778).

The spelling of 635242 in words is "six hundred thirty-five thousand, two hundred forty-two".