42730423018 has 8 divisors (see below), whose sum is σ = 65146382820. Its totient is φ = 21014962080.

The previous prime is 42730423009. The next prime is 42730423031. The reversal of 42730423018 is 81032403724.

It can be written as a sum of positive squares in 2 ways, for example, as 42672404329 + 58018689 = 206573^2 + 7617^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175124563 + ... + 175124806.

Almost surely, 2^42730423018 is an apocalyptic number.

42730423018 is a deficient number, since it is larger than the sum of its proper divisors (22415959802).

42730423018 is a wasteful number, since it uses less digits than its factorization.

42730423018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350249432.

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 42730423018 in words is "forty-two billion, seven hundred thirty million, four hundred twenty-three thousand, eighteen".