12136240 has 20 divisors (see below), whose sum is σ = 28216944. Its totient is φ = 4854464.

The previous prime is 12136219. The next prime is 12136273. The reversal of 12136240 is 4263121.

12136240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

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, 75772 + ... + 75931.

Almost surely, 2^12136240 is an apocalyptic number.

12136240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12136240 is an abundant number, since it is smaller than the sum of its proper divisors (16080704).

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

12136240 is a wasteful number, since it uses less digits than its factorization.

12136240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151716 (or 151710 counting only the distinct ones).

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

The square root of 12136240 is about 3483.7106653682. The cubic root of 12136240 is about 229.8060116041.

Adding to 12136240 its reverse (4263121), we get a palindrome (16399361).

The spelling of 12136240 in words is "twelve million, one hundred thirty-six thousand, two hundred forty".