635142 has 16 divisors (see below), whose sum is σ = 1305072. Its totient is φ = 205920.

The previous prime is 635119. The next prime is 635147. The reversal of 635142 is 241536.

It is a happy number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 635142.

It is not an unprimeable number, because it can be changed into a prime (635147) by changing a digit.

635142 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 in 7 ways as a sum of consecutive naturals, for example, 1209 + ... + 1652.

It is an arithmetic number, because the mean of its divisors is an integer number (81567).

2⁶³⁵¹⁴² is an apocalyptic number.

635142 is an abundant number, since it is smaller than the sum of its proper divisors (669930).

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

635142 is a wasteful number, since it uses less digits than its factorization.

635142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2903.

The product of its digits is 720, while the sum is 21.

The square root of 635142 is about 796.9579662692. The cubic root of 635142 is about 85.9587868150.

Adding to 635142 its reverse (241536), we get a palindrome (876678).

It can be divided in two parts, 635 and 142, that added together give a palindrome (777).

The spelling of 635142 in words is "six hundred thirty-five thousand, one hundred forty-two".