42729681740 has 96 divisors (see below), whose sum is σ = 91693534464. Its totient is φ = 16723848960.

The previous prime is 42729681703. The next prime is 42729681791. The reversal of 42729681740 is 4718692724.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 78116147 + ... + 78116693.

It is an arithmetic number, because the mean of its divisors is an integer number (955140984).

Almost surely, 2^42729681740 is an apocalyptic number.

It is an amenable number.

42729681740 is an abundant number, since it is smaller than the sum of its proper divisors (48963852724).

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

42729681740 is a wasteful number, since it uses less digits than its factorization.

42729681740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047 (or 1045 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 42729681740 in words is "forty-two billion, seven hundred twenty-nine million, six hundred eighty-one thousand, seven hundred forty".