12042026505 has 12 divisors (see below), whose sum is σ = 20872846020. Its totient is φ = 6422414112.

The previous prime is 12042026501. The next prime is 12042026527. The reversal of 12042026505 is 50562024021.

12042026505 is a `hidden beast` number, since 1 + 2 + 0 + 4 + 2 + 0 + 2 + 650 + 5 = 666.

12042026505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3510918009 + 8531108496 = 59253^2 + 92364^2 .

It is not a de Polignac number, because 12042026505 - 2² = 12042026501 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12042026501) 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 11 ways as a sum of consecutive naturals, for example, 133800250 + ... + 133800339.

It is an arithmetic number, because the mean of its divisors is an integer number (1739403835).

Almost surely, 2^12042026505 is an apocalyptic number.

12042026505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12042026505 is a deficient number, since it is larger than the sum of its proper divisors (8830819515).

12042026505 is a wasteful number, since it uses less digits than its factorization.

12042026505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267600600 (or 267600597 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 12042026505 in words is "twelve billion, forty-two million, twenty-six thousand, five hundred five".