42450734646 has 48 divisors (see below), whose sum is σ = 97536576384. Its totient is φ = 13297420032.

The previous prime is 42450734569. The next prime is 42450734681. The reversal of 42450734646 is 64643705424.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 93595 + ... + 306041.

It is an arithmetic number, because the mean of its divisors is an integer number (2032012008).

Almost surely, 2^42450734646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42450734646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48768288192).

42450734646 is an abundant number, since it is smaller than the sum of its proper divisors (55085841738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42450734646 is a wasteful number, since it uses less digits than its factorization.

42450734646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213125 (or 213122 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 45.

The spelling of 42450734646 in words is "forty-two billion, four hundred fifty million, seven hundred thirty-four thousand, six hundred forty-six".