12120630426 has 32 divisors (see below), whose sum is σ = 27391262400. Its totient is φ = 3971730960.

The previous prime is 12120630421. The next prime is 12120630427. The reversal of 12120630426 is 62403602121.

12120630426 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 0 + 630 + 4 + 26 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12120630426.

It is not an unprimeable number, because it can be changed into a prime (12120630421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1898985 + ... + 1905356.

It is an arithmetic number, because the mean of its divisors is an integer number (855976950).

Almost surely, 2^12120630426 is an apocalyptic number.

12120630426 is an abundant number, since it is smaller than the sum of its proper divisors (15270631974).

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

12120630426 is a wasteful number, since it uses less digits than its factorization.

12120630426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804411 (or 3804405 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 12120630426 in words is "twelve billion, one hundred twenty million, six hundred thirty thousand, four hundred twenty-six".