42246691601 has 4 divisors (see below), whose sum is σ = 43703474100. Its totient is φ = 40789909104.

The previous prime is 42246691573. The next prime is 42246691661. The reversal of 42246691601 is 10619664224.

It is a Cunningham number, because it is equal to 205540²+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 22153345600 + 20093346001 = 148840^2 + 141751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42246691601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42246691661) 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, 728391206 + ... + 728391263.

It is an arithmetic number, because the mean of its divisors is an integer number (10925868525).

Almost surely, 2^42246691601 is an apocalyptic number.

It is an amenable number.

42246691601 is a deficient number, since it is larger than the sum of its proper divisors (1456782499).

42246691601 is a wasteful number, since it uses less digits than its factorization.

42246691601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456782498.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 42246691601 in words is "forty-two billion, two hundred forty-six million, six hundred ninety-one thousand, six hundred one".