42711730 has 8 divisors (see below), whose sum is σ = 76881132. Its totient is φ = 17084688.

The previous prime is 42711703. The next prime is 42711733. The reversal of 42711730 is 3711724.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42497361 + 214369 = 6519^2 + 463^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 42711695 and 42711704.

It is not an unprimeable number, because it can be changed into a prime (42711733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2135577 + ... + 2135596.

Almost surely, 2^42711730 is an apocalyptic number.

42711730 is a deficient number, since it is larger than the sum of its proper divisors (34169402).

42711730 is a wasteful number, since it uses less digits than its factorization.

42711730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4271180.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 42711730 is about 6535.4211800006. The cubic root of 42711730 is about 349.5551627588. Note that the first 3 decimals are identical.

The spelling of 42711730 in words is "forty-two million, seven hundred eleven thousand, seven hundred thirty".