12124557 has 12 divisors (see below), whose sum is σ = 17725344. Its totient is φ = 7985160.

The previous prime is 12124549. The next prime is 12124571. The reversal of 12124557 is 75542121.

It is not a de Polignac number, because 12124557 - 2³ = 12124549 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12124557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12124537) 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, 7369 + ... + 8862.

It is an arithmetic number, because the mean of its divisors is an integer number (1477112).

Almost surely, 2^12124557 is an apocalyptic number.

It is an amenable number.

12124557 is a deficient number, since it is larger than the sum of its proper divisors (5600787).

12124557 is a wasteful number, since it uses less digits than its factorization.

12124557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16320 (or 16317 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 12124557 is about 3482.0334576221. The cubic root of 12124557 is about 229.7322467034.

Adding to 12124557 its reverse (75542121), we get a palindrome (87666678).

The spelling of 12124557 in words is "twelve million, one hundred twenty-four thousand, five hundred fifty-seven".