42705721350 has 72 divisors (see below), whose sum is σ = 114863085792. Its totient is φ = 11375582400.

The previous prime is 42705721297. The next prime is 42705721379. The reversal of 42705721350 is 5312750724.

42705721350 is a `hidden beast` number, since 4 + 2 + 70 + 572 + 13 + 5 + 0 = 666.

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 35 ways as a sum of consecutive naturals, for example, 357864 + ... + 462036.

It is an arithmetic number, because the mean of its divisors is an integer number (1595320636).

Almost surely, 2^42705721350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42705721350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57431542896).

42705721350 is an abundant number, since it is smaller than the sum of its proper divisors (72157364442).

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

42705721350 is a wasteful number, since it uses less digits than its factorization.

42705721350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105102 (or 105094 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The spelling of 42705721350 in words is "forty-two billion, seven hundred five million, seven hundred twenty-one thousand, three hundred fifty".