42729740780 has 24 divisors (see below), whose sum is σ = 90066044880. Its totient is φ = 17028355520.

The previous prime is 42729740749. The next prime is 42729740803. The reversal of 42729740780 is 8704792724.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3965786 + ... + 3976545.

It is an arithmetic number, because the mean of its divisors is an integer number (3752751870).

Almost surely, 2^42729740780 is an apocalyptic number.

It is an amenable number.

42729740780 is an abundant number, since it is smaller than the sum of its proper divisors (47336304100).

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

42729740780 is a wasteful number, since it uses less digits than its factorization.

42729740780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7942609 (or 7942607 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 50.

The spelling of 42729740780 in words is "forty-two billion, seven hundred twenty-nine million, seven hundred forty thousand, seven hundred eighty".