12740842070146 has 4 divisors (see below), whose sum is σ = 19111263105222. Its totient is φ = 6370421035072.

The previous prime is 12740842070123. The next prime is 12740842070191. The reversal of 12740842070146 is 64107024804721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11087161808121 + 1653680262025 = 3329739^2 + 1285955^2 .

It is a super-2 number, since 2×12740842070146² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12740842070096 and 12740842070105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3185210517535 + ... + 3185210517538.

Almost surely, 2^{12740842070146} is an apocalyptic number.

12740842070146 is a deficient number, since it is larger than the sum of its proper divisors (6370421035076).

12740842070146 is an equidigital number, since it uses as much as digits as its factorization.

12740842070146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6370421035075.

The product of its (nonzero) digits is 602112, while the sum is 46.

Adding to 12740842070146 its reverse (64107024804721), we get a palindrome (76847866874867).

The spelling of 12740842070146 in words is "twelve trillion, seven hundred forty billion, eight hundred forty-two million, seventy thousand, one hundred forty-six".