12543514 has 4 divisors (see below), whose sum is σ = 18815274. Its totient is φ = 6271756.

The previous prime is 12543511. The next prime is 12543521. The reversal of 12543514 is 41534521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41534521 = 7 ⋅5933503.

It can be written as a sum of positive squares in only one way, i.e., 12006225 + 537289 = 3465^2 + 733^2 .

It is not an unprimeable number, because it can be changed into a prime (12543511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3135877 + ... + 3135880.

Almost surely, 2^12543514 is an apocalyptic number.

12543514 is a deficient number, since it is larger than the sum of its proper divisors (6271760).

12543514 is an equidigital number, since it uses as much as digits as its factorization.

12543514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6271759.

The product of its digits is 2400, while the sum is 25.

The square root of 12543514 is about 3541.6823685926. The cubic root of 12543514 is about 232.3484285918.

The spelling of 12543514 in words is "twelve million, five hundred forty-three thousand, five hundred fourteen".