41609778242 has 18 divisors (see below), whose sum is σ = 63107190297. Its totient is φ = 20576558784.

The previous prime is 41609778211. The next prime is 41609778247. The reversal of 41609778242 is 24287790614.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41501430961 + 108347281 = 203719^2 + 10409^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=144239.

It is a super-2 number, since 2×41609778242² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41609778247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 27981623 + ... + 27983109.

Almost surely, 2^41609778242 is an apocalyptic number.

41609778242 is a deficient number, since it is larger than the sum of its proper divisors (21497412055).

41609778242 is an frugal number, since it uses more digits than its factorization.

41609778242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 50.

Multiplying 41609778242 by its sum of digits (50), we get a square (2080488912100 = 1442390²).

The spelling of 41609778242 in words is "forty-one billion, six hundred nine million, seven hundred seventy-eight thousand, two hundred forty-two".