12120043 has 8 divisors (see below), whose sum is σ = 13739600. Its totient is φ = 10598688.

The previous prime is 12120019. The next prime is 12120047. The reversal of 12120043 is 34002121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12120043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24288 + ... + 24781.

It is an arithmetic number, because the mean of its divisors is an integer number (1717450).

Almost surely, 2^12120043 is an apocalyptic number.

12120043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12120043 is a deficient number, since it is larger than the sum of its proper divisors (1619557).

12120043 is a wasteful number, since it uses less digits than its factorization.

12120043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49101.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12120043 is about 3481.3852128140. The cubic root of 12120043 is about 229.7037332195.

Adding to 12120043 its reverse (34002121), we get a palindrome (46122164).

It can be divided in two parts, 121 and 20043, that added together give a square (20164 = 142²).

The spelling of 12120043 in words is "twelve million, one hundred twenty thousand, forty-three".