42249042249 has 16 divisors (see below), whose sum is σ = 56899585344. Its totient is φ = 27882360000.

The previous prime is 42249042239. The next prime is 42249042287. The reversal of 42249042249 is 94224094224.

It is not a de Polignac number, because 42249042249 - 2²⁰ = 42247993673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42249042249.

It is not an unprimeable number, because it can be changed into a prime (42249042239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2992962 + ... + 3007044.

It is an arithmetic number, because the mean of its divisors is an integer number (3556224084).

Almost surely, 2^42249042249 is an apocalyptic number.

It is an amenable number.

42249042249 is a deficient number, since it is larger than the sum of its proper divisors (14650543095).

42249042249 is a wasteful number, since it uses less digits than its factorization.

42249042249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24088.

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 42249042249 in words is "forty-two billion, two hundred forty-nine million, forty-two thousand, two hundred forty-nine".