124221236 has 12 divisors (see below), whose sum is σ = 217533540. Its totient is φ = 62068800.

The previous prime is 124221211. The next prime is 124221257. The reversal of 124221236 is 632122421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 102131236 + 22090000 = 10106^2 + 4700^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3215 + ... + 16086.

It is an arithmetic number, because the mean of its divisors is an integer number (18127795).

Almost surely, 2^124221236 is an apocalyptic number.

It is an amenable number.

124221236 is a deficient number, since it is larger than the sum of its proper divisors (93312304).

124221236 is a wasteful number, since it uses less digits than its factorization.

124221236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20914 (or 20912 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 124221236 is about 11145.4580883874. The cubic root of 124221236 is about 498.9594841556.

Adding to 124221236 its reverse (632122421), we get a palindrome (756343657).

The spelling of 124221236 in words is "one hundred twenty-four million, two hundred twenty-one thousand, two hundred thirty-six".