12240136 has 16 divisors (see below), whose sum is σ = 24300540. Its totient is φ = 5760000.

The previous prime is 12240131. The next prime is 12240157. The reversal of 12240136 is 63104221.

It can be written as a sum of positive squares in 2 ways, for example, as 9036036 + 3204100 = 3006^2 + 1790^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12240131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44865 + ... + 45136.

Almost surely, 2^12240136 is an apocalyptic number.

It is an amenable number.

12240136 is a deficient number, since it is larger than the sum of its proper divisors (12060404).

12240136 is a wasteful number, since it uses less digits than its factorization.

12240136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90024 (or 90020 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 12240136 is about 3498.5905733595. The cubic root of 12240136 is about 230.4599240512.

Adding to 12240136 its reverse (63104221), we get a palindrome (75344357).

The spelling of 12240136 in words is "twelve million, two hundred forty thousand, one hundred thirty-six".