42730679 has 8 divisors (see below), whose sum is σ = 44339328. Its totient is φ = 41136480.

The previous prime is 42730663. The next prime is 42730687. The reversal of 42730679 is 97603724.

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 42730679 - 2⁴ = 42730663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42730609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2609 + ... + 9605.

It is an arithmetic number, because the mean of its divisors is an integer number (5542416).

Almost surely, 2^42730679 is an apocalyptic number.

42730679 is a deficient number, since it is larger than the sum of its proper divisors (1608649).

42730679 is a wasteful number, since it uses less digits than its factorization.

42730679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7225.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 42730679 is about 6536.8707345335. The cubic root of 42730679 is about 349.6068483378.

The spelling of 42730679 in words is "forty-two million, seven hundred thirty thousand, six hundred seventy-nine".