42730916 has 6 divisors (see below), whose sum is σ = 74779110. Its totient is φ = 21365456.

The previous prime is 42730913. The next prime is 42730921. The reversal of 42730916 is 61903724.

It can be written as a sum of positive squares in only one way, i.e., 42198016 + 532900 = 6496^2 + 730^2 .

It is not an unprimeable number, because it can be changed into a prime (42730913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5341361 + ... + 5341368.

It is an arithmetic number, because the mean of its divisors is an integer number (12463185).

Almost surely, 2^42730916 is an apocalyptic number.

It is an amenable number.

42730916 is a deficient number, since it is larger than the sum of its proper divisors (32048194).

42730916 is a wasteful number, since it uses less digits than its factorization.

42730916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10682733 (or 10682731 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 42730916 is about 6536.8888624483. Note that the first 4 decimals coincide. The cubic root of 42730916 is about 349.6074946858.

The spelling of 42730916 in words is "forty-two million, seven hundred thirty thousand, nine hundred sixteen".