42421826345617 has 4 divisors (see below), whose sum is σ = 42421867605796. Its totient is φ = 42421785085440.

The previous prime is 42421826345611. The next prime is 42421826345621. The reversal of 42421826345617 is 71654362812424.

42421826345617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 6513204²+1.

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 41373248297616 + 1048578048001 = 6432204^2 + 1024001^2 .

It is a cyclic number.

It is not a de Polignac number, because 42421826345617 - 2³ = 42421826345609 is a prime.

It is a super-2 number, since 2×42421826345617² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42421826345611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19047384 + ... + 21157657.

It is an arithmetic number, because the mean of its divisors is an integer number (10605466901449).

Almost surely, 2^{42421826345617} is an apocalyptic number.

It is an amenable number.

42421826345617 is a deficient number, since it is larger than the sum of its proper divisors (41260179).

42421826345617 is a wasteful number, since it uses less digits than its factorization.

42421826345617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41260178.

The product of its digits is 15482880, while the sum is 55.

The spelling of 42421826345617 in words is "forty-two trillion, four hundred twenty-one billion, eight hundred twenty-six million, three hundred forty-five thousand, six hundred seventeen".