12242156 has 24 divisors (see below), whose sum is σ = 22848000. Its totient is φ = 5722704.

The previous prime is 12242123. The next prime is 12242161. The reversal of 12242156 is 65124221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4985 + ... + 7023.

It is an arithmetic number, because the mean of its divisors is an integer number (952000).

Almost surely, 2^12242156 is an apocalyptic number.

It is an amenable number.

12242156 is a deficient number, since it is larger than the sum of its proper divisors (10605844).

12242156 is a wasteful number, since it uses less digits than its factorization.

12242156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141 (or 2139 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 12242156 is about 3498.8792491311. The cubic root of 12242156 is about 230.4726010192.

Adding to 12242156 its reverse (65124221), we get a palindrome (77366377).

It can be divided in two parts, 1224215 and 6, that added together give a palindrome (1224221).

The spelling of 12242156 in words is "twelve million, two hundred forty-two thousand, one hundred fifty-six".