12120542 has 24 divisors (see below), whose sum is σ = 21269664. Its totient is φ = 5164992.

The previous prime is 12120533. The next prime is 12120569. The reversal of 12120542 is 24502121.

It is a self number, because there is not a number n which added to its sum of digits gives 12120542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32843 + ... + 33209.

It is an arithmetic number, because the mean of its divisors is an integer number (886236).

Almost surely, 2^12120542 is an apocalyptic number.

12120542 is a deficient number, since it is larger than the sum of its proper divisors (9149122).

12120542 is a wasteful number, since it uses less digits than its factorization.

12120542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720 (or 713 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 12120542 is about 3481.4568789517. The cubic root of 12120542 is about 229.7068855898.

Adding to 12120542 its reverse (24502121), we get a palindrome (36622663).

The spelling of 12120542 in words is "twelve million, one hundred twenty thousand, five hundred forty-two".