12195542 has 8 divisors (see below), whose sum is σ = 18361632. Its totient is φ = 6075000.

The previous prime is 12195529. The next prime is 12195553. The reversal of 12195542 is 24559121.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10709 + ... + 11792.

It is an arithmetic number, because the mean of its divisors is an integer number (2295204).

Almost surely, 2^12195542 is an apocalyptic number.

12195542 is a deficient number, since it is larger than the sum of its proper divisors (6166090).

12195542 is a wasteful number, since it uses less digits than its factorization.

12195542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22774.

The product of its digits is 3600, while the sum is 29.

The square root of 12195542 is about 3492.2116201628. The cubic root of 12195542 is about 230.1797083213.

The spelling of 12195542 in words is "twelve million, one hundred ninety-five thousand, five hundred forty-two".