12126357 has 12 divisors (see below), whose sum is σ = 17633824. Its totient is φ = 8029800.

The previous prime is 12126353. The next prime is 12126403. The reversal of 12126357 is 75362121.

It is a happy number.

12126357 is a `hidden beast` number, since 1 + 21 + 2 + 635 + 7 = 666.

It is not a de Polignac number, because 12126357 - 2² = 12126353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12126357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3103 + ... + 5820.

Almost surely, 2^12126357 is an apocalyptic number.

It is an amenable number.

12126357 is a deficient number, since it is larger than the sum of its proper divisors (5507467).

12126357 is a wasteful number, since it uses less digits than its factorization.

12126357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9080 (or 9077 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 12126357 is about 3482.2919176887. The cubic root of 12126357 is about 229.7436147499.

Adding to 12126357 its reverse (75362121), we get a palindrome (87488478).

It can be divided in two parts, 1212 and 6357, that added together give a square (7569 = 87²).

The spelling of 12126357 in words is "twelve million, one hundred twenty-six thousand, three hundred fifty-seven".