12135242 has 12 divisors (see below), whose sum is σ = 21174930. Its totient is φ = 5200776.

The previous prime is 12135217. The next prime is 12135257. The reversal of 12135242 is 24253121.

12135242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10233601 + 1901641 = 3199^2 + 1379^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61817 + ... + 62012.

Almost surely, 2^12135242 is an apocalyptic number.

12135242 is a deficient number, since it is larger than the sum of its proper divisors (9039688).

12135242 is a wasteful number, since it uses less digits than its factorization.

12135242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123845 (or 123838 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 12135242 is about 3483.5674243511. The cubic root of 12135242 is about 229.7997122152.

Adding to 12135242 its reverse (24253121), we get a palindrome (36388363).

The spelling of 12135242 in words is "twelve million, one hundred thirty-five thousand, two hundred forty-two".