42440422647 has 16 divisors (see below), whose sum is σ = 64683660032. Its totient is φ = 24246967680.

The previous prime is 42440422643. The next prime is 42440422657. The reversal of 42440422647 is 74622404424.

It is not a de Polignac number, because 42440422647 - 2² = 42440422643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42440422643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83554 + ... + 303087.

It is an arithmetic number, because the mean of its divisors is an integer number (4042728752).

Almost surely, 2^42440422647 is an apocalyptic number.

42440422647 is a deficient number, since it is larger than the sum of its proper divisors (22243237385).

42440422647 is a wasteful number, since it uses less digits than its factorization.

42440422647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391878.

The product of its (nonzero) digits is 344064, while the sum is 39.

The spelling of 42440422647 in words is "forty-two billion, four hundred forty million, four hundred twenty-two thousand, six hundred forty-seven".