253135242 has 12 divisors (see below), whose sum is σ = 548459730. Its totient is φ = 84378408.

The previous prime is 253135213. The next prime is 253135247. The reversal of 253135242 is 242531352.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 245893761 + 7241481 = 15681^2 + 2691^2 .

It is not an unprimeable number, because it can be changed into a prime (253135247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7031517 + ... + 7031552.

Almost surely, 2^253135242 is an apocalyptic number.

253135242 is an abundant number, since it is smaller than the sum of its proper divisors (295324488).

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

253135242 is a wasteful number, since it uses less digits than its factorization.

253135242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14063077 (or 14063074 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 253135242 is about 15910.2244484482. The cubic root of 253135242 is about 632.5830306512.

Adding to 253135242 its reverse (242531352), we get a palindrome (495666594).

It can be divided in two parts, 2531 and 35242, that added together give a palindrome (37773).

The spelling of 253135242 in words is "two hundred fifty-three million, one hundred thirty-five thousand, two hundred forty-two".