42739697 has 16 divisors (see below), whose sum is σ = 57386112. Its totient is φ = 30741120.

The previous prime is 42739693. The next prime is 42739709. The reversal of 42739697 is 79693724.

42739697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42739697 - 2² = 42739693 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42739693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20348 + ... + 22349.

It is an arithmetic number, because the mean of its divisors is an integer number (3586632).

Almost surely, 2^42739697 is an apocalyptic number.

It is an amenable number.

42739697 is a deficient number, since it is larger than the sum of its proper divisors (14646415).

42739697 is a wasteful number, since it uses less digits than its factorization.

42739697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42728.

The product of its digits is 571536, while the sum is 47.

The square root of 42739697 is about 6537.5604777317. The cubic root of 42739697 is about 349.6314406047.

The spelling of 42739697 in words is "forty-two million, seven hundred thirty-nine thousand, six hundred ninety-seven".