12224542 has 8 divisors (see below), whose sum is σ = 20003832. Its totient is φ = 5556600.

The previous prime is 12224521. The next prime is 12224551. The reversal of 12224542 is 24542221.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 555661 = 12224542 / (1 + 2 + 2 + 2 + 4 + 5 + 4 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277809 + ... + 277852.

It is an arithmetic number, because the mean of its divisors is an integer number (2500479).

Almost surely, 2^12224542 is an apocalyptic number.

12224542 is a deficient number, since it is larger than the sum of its proper divisors (7779290).

12224542 is a wasteful number, since it uses less digits than its factorization.

12224542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555674.

The product of its digits is 1280, while the sum is 22.

The square root of 12224542 is about 3496.3612513583. The cubic root of 12224542 is about 230.3620133932.

Adding to 12224542 its reverse (24542221), we get a palindrome (36766763).

The spelling of 12224542 in words is "twelve million, two hundred twenty-four thousand, five hundred forty-two".