42739335361 has 4 divisors (see below), whose sum is σ = 42745004500. Its totient is φ = 42733666224.

The previous prime is 42739335349. The next prime is 42739335383. The reversal of 42739335361 is 16353393724.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28482975361 + 14256360000 = 168769^2 + 119400^2 .

It is a cyclic number.

It is not a de Polignac number, because 42739335361 - 2¹⁷ = 42739204289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42739335761) 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 3 ways as a sum of consecutive naturals, for example, 2823246 + ... + 2838343.

It is an arithmetic number, because the mean of its divisors is an integer number (10686251125).

Almost surely, 2^42739335361 is an apocalyptic number.

It is an amenable number.

42739335361 is a deficient number, since it is larger than the sum of its proper divisors (5669139).

42739335361 is an equidigital number, since it uses as much as digits as its factorization.

42739335361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5669138.

The product of its digits is 1224720, while the sum is 46.

The spelling of 42739335361 in words is "forty-two billion, seven hundred thirty-nine million, three hundred thirty-five thousand, three hundred sixty-one".