12543157 has 8 divisors (see below), whose sum is σ = 13714272. Its totient is φ = 11377200.

The previous prime is 12543151. The next prime is 12543191. The reversal of 12543157 is 75134521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12543157 - 2¹⁹ = 12018869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12543151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5283 + ... + 7279.

It is an arithmetic number, because the mean of its divisors is an integer number (1714284).

Almost surely, 2^12543157 is an apocalyptic number.

It is an amenable number.

12543157 is a deficient number, since it is larger than the sum of its proper divisors (1171115).

12543157 is a wasteful number, since it uses less digits than its factorization.

12543157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579.

The product of its digits is 4200, while the sum is 28.

The square root of 12543157 is about 3541.6319684575. The cubic root of 12543157 is about 232.3462242872.

Adding to 12543157 its reverse (75134521), we get a palindrome (87677678).

It can be divided in two parts, 12 and 543157, that added together give a square (543169 = 737²).

The spelling of 12543157 in words is "twelve million, five hundred forty-three thousand, one hundred fifty-seven".