634342 has 4 divisors (see below), whose sum is σ = 951516. Its totient is φ = 317170.

The previous prime is 634331. The next prime is 634343. The reversal of 634342 is 243436.

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

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 6⁴ + 3⁹ + 3¹² + 4⁷ + 4⁸ + 2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634343) by changing a digit.

634342 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, 158584 + ... + 158587.

It is an arithmetic number, because the mean of its divisors is an integer number (237879).

2⁶³⁴³⁴² is an apocalyptic number.

634342 is a deficient number, since it is larger than the sum of its proper divisors (317174).

634342 is a wasteful number, since it uses less digits than its factorization.

634342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317173.

The product of its digits is 1728, while the sum is 22.

The square root of 634342 is about 796.4558995952. The cubic root of 634342 is about 85.9226815441.

Adding to 634342 its reverse (243436), we get a palindrome (877778).

It can be divided in two parts, 63434 and 2, that added together give a palindrome (63436).

The spelling of 634342 in words is "six hundred thirty-four thousand, three hundred forty-two".