42688929 has 8 divisors (see below), whose sum is σ = 56951680. Its totient is φ = 28442736.

The previous prime is 42688927. The next prime is 42688969. The reversal of 42688929 is 92988624.

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

It is not a de Polignac number, because 42688929 - 2¹ = 42688927 is a prime.

It is a super-3 number, since 3×42688929³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42688927) 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, 4392 + ... + 10230.

It is an arithmetic number, because the mean of its divisors is an integer number (7118960).

Almost surely, 2^42688929 is an apocalyptic number.

It is an amenable number.

42688929 is a deficient number, since it is larger than the sum of its proper divisors (14262751).

42688929 is a wasteful number, since it uses less digits than its factorization.

42688929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8279.

The product of its digits is 497664, while the sum is 48.

The square root of 42688929 is about 6533.6765301016. The cubic root of 42688929 is about 349.4929501383.

The spelling of 42688929 in words is "forty-two million, six hundred eighty-eight thousand, nine hundred twenty-nine".