42709329 has 32 divisors (see below), whose sum is σ = 68544000. Its totient is φ = 26127360.

The previous prime is 42709327. The next prime is 42709343. The reversal of 42709329 is 92390724.

It is not a de Polignac number, because 42709329 - 2¹ = 42709327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42709293 and 42709302.

It is not an unprimeable number, because it can be changed into a prime (42709327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94897 + ... + 95345.

It is an arithmetic number, because the mean of its divisors is an integer number (2142000).

Almost surely, 2^42709329 is an apocalyptic number.

It is an amenable number.

42709329 is a deficient number, since it is larger than the sum of its proper divisors (25834671).

42709329 is a wasteful number, since it uses less digits than its factorization.

42709329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 42709329 is about 6535.2374861209. The cubic root of 42709329 is about 349.5486126637.

The spelling of 42709329 in words is "forty-two million, seven hundred nine thousand, three hundred twenty-nine".