12057420205 has 8 divisors (see below), whose sum is σ = 14504283000. Its totient is φ = 9622350336.

The previous prime is 12057420191. The next prime is 12057420233. The reversal of 12057420205 is 50202475021.

It can be written as a sum of positive squares in 4 ways, for example, as 6518786121 + 5538634084 = 80739^2 + 74422^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12057420205 - 2⁷ = 12057420077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2945980 + ... + 2950069.

It is an arithmetic number, because the mean of its divisors is an integer number (1813035375).

Almost surely, 2^12057420205 is an apocalyptic number.

It is an amenable number.

12057420205 is a deficient number, since it is larger than the sum of its proper divisors (2446862795).

12057420205 is an equidigital number, since it uses as much as digits as its factorization.

12057420205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5896463.

The product of its (nonzero) digits is 5600, while the sum is 28.

Adding to 12057420205 its reverse (50202475021), we get a palindrome (62259895226).

The spelling of 12057420205 in words is "twelve billion, fifty-seven million, four hundred twenty thousand, two hundred five".