12140156 has 12 divisors (see below), whose sum is σ = 24280368. Its totient is φ = 5202912.

The previous prime is 12140153. The next prime is 12140201. The reversal of 12140156 is 65104121.

12140156 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140153) 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, 216761 + ... + 216816.

It is an arithmetic number, because the mean of its divisors is an integer number (2023364).

Almost surely, 2^12140156 is an apocalyptic number.

It is an amenable number.

12140156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12140156 is a wasteful number, since it uses less digits than its factorization.

12140156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433588 (or 433586 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 12140156 is about 3484.2726644165. The cubic root of 12140156 is about 229.8307261111.

Adding to 12140156 its reverse (65104121), we get a palindrome (77244277).

The spelling of 12140156 in words is "twelve million, one hundred forty thousand, one hundred fifty-six".