12120558 has 32 divisors (see below), whose sum is σ = 25816320. Its totient is φ = 3780480.

The previous prime is 12120533. The next prime is 12120569. The reversal of 12120558 is 85502121.

It is a super-3 number, since 3×12120558³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33583 + ... + 33941.

It is an arithmetic number, because the mean of its divisors is an integer number (806760).

Almost surely, 2^12120558 is an apocalyptic number.

12120558 is an abundant number, since it is smaller than the sum of its proper divisors (13695762).

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

12120558 is a wasteful number, since it uses less digits than its factorization.

12120558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 12120558 is about 3481.4591768395. The cubic root of 12120558 is about 229.7069866664.

Adding to 12120558 its reverse (85502121), we get a palindrome (97622679).

The spelling of 12120558 in words is "twelve million, one hundred twenty thousand, five hundred fifty-eight".