42729740609 has 8 divisors (see below), whose sum is σ = 42951318720. Its totient is φ = 42508342800.

The previous prime is 42729740587. The next prime is 42729740617. The reversal of 42729740609 is 90604792724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42729740609 - 2⁸ = 42729740353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42729640609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443807 + ... + 531435.

It is an arithmetic number, because the mean of its divisors is an integer number (5368914840).

Almost surely, 2^42729740609 is an apocalyptic number.

It is an amenable number.

42729740609 is a deficient number, since it is larger than the sum of its proper divisors (221578111).

42729740609 is a wasteful number, since it uses less digits than its factorization.

42729740609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90151.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 42729740609 in words is "forty-two billion, seven hundred twenty-nine million, seven hundred forty thousand, six hundred nine".