12543342 has 16 divisors (see below), whose sum is σ = 28670592. Its totient is φ = 3583800.

The previous prime is 12543337. The next prime is 12543347. The reversal of 12543342 is 24334521.

It is an interprime number because it is at equal distance from previous prime (12543337) and next prime (12543347).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12543347) 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, 149284 + ... + 149367.

It is an arithmetic number, because the mean of its divisors is an integer number (1791912).

Almost surely, 2^12543342 is an apocalyptic number.

12543342 is an abundant number, since it is smaller than the sum of its proper divisors (16127250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12543342 is a wasteful number, since it uses less digits than its factorization.

12543342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298663.

The product of its digits is 2880, while the sum is 24.

The square root of 12543342 is about 3541.6580862641. The cubic root of 12543342 is about 232.3473665791.

Adding to 12543342 its reverse (24334521), we get a palindrome (36877863).

The spelling of 12543342 in words is "twelve million, five hundred forty-three thousand, three hundred forty-two".