42742521064373 has 4 divisors (see below), whose sum is σ = 46030407300108. Its totient is φ = 39454634828640.

The previous prime is 42742521064351. The next prime is 42742521064391. The reversal of 42742521064373 is 37346012524724.

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 20644464529924 + 22098056534449 = 4543618^2 + 4700857^2 .

It is a cyclic number.

It is not a de Polignac number, because 42742521064373 - 2¹⁸ = 42742520802229 is a prime.

It is a super-2 number, since 2×42742521064373² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42742521064343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1643943117848 + ... + 1643943117873.

It is an arithmetic number, because the mean of its divisors is an integer number (11507601825027).

Almost surely, 2^{42742521064373} is an apocalyptic number.

It is an amenable number.

42742521064373 is a deficient number, since it is larger than the sum of its proper divisors (3287886235735).

42742521064373 is a wasteful number, since it uses less digits than its factorization.

42742521064373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287886235734.

The product of its (nonzero) digits is 6773760, while the sum is 50.

The spelling of 42742521064373 in words is "forty-two trillion, seven hundred forty-two billion, five hundred twenty-one million, sixty-four thousand, three hundred seventy-three".