42729681742 has 32 divisors (see below), whose sum is σ = 73617667200. Its totient is φ = 18396266400.

The previous prime is 42729681703. The next prime is 42729681791. The reversal of 42729681742 is 24718692724.

It is a self number, because there is not a number n which added to its sum of digits gives 42729681742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2595517 + ... + 2611927.

It is an arithmetic number, because the mean of its divisors is an integer number (2300552100).

Almost surely, 2^42729681742 is an apocalyptic number.

42729681742 is a deficient number, since it is larger than the sum of its proper divisors (30887985458).

42729681742 is a wasteful number, since it uses less digits than its factorization.

42729681742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22672.

The product of its digits is 2709504, while the sum is 52.

The spelling of 42729681742 in words is "forty-two billion, seven hundred twenty-nine million, six hundred eighty-one thousand, seven hundred forty-two".