12543542 has 8 divisors (see below), whose sum is σ = 20525832. Its totient is φ = 5701600.

The previous prime is 12543529. The next prime is 12543551. The reversal of 12543542 is 24534521.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285059 + ... + 285102.

It is an arithmetic number, because the mean of its divisors is an integer number (2565729).

Almost surely, 2^12543542 is an apocalyptic number.

12543542 is a deficient number, since it is larger than the sum of its proper divisors (7982290).

12543542 is a wasteful number, since it uses less digits than its factorization.

12543542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570174.

The product of its digits is 4800, while the sum is 26.

The square root of 12543542 is about 3541.6863215141. The cubic root of 12543542 is about 232.3486014766.

The spelling of 12543542 in words is "twelve million, five hundred forty-three thousand, five hundred forty-two".