12013240 has 16 divisors (see below), whose sum is σ = 27029880. Its totient is φ = 4805280.

The previous prime is 12013229. The next prime is 12013259. The reversal of 12013240 is 4231021.

It is a self number, because there is not a number n which added to its sum of digits gives 12013240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150126 + ... + 150205.

Almost surely, 2^12013240 is an apocalyptic number.

12013240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12013240 is an abundant number, since it is smaller than the sum of its proper divisors (15016640).

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

12013240 is a wasteful number, since it uses less digits than its factorization.

12013240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300342 (or 300338 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12013240 is about 3466.0121176938. The cubic root of 12013240 is about 229.0270176548.

Adding to 12013240 its reverse (4231021), we get a palindrome (16244261).

The spelling of 12013240 in words is "twelve million, thirteen thousand, two hundred forty".