42659929 has 4 divisors (see below), whose sum is σ = 45941476. Its totient is φ = 39378384.

The previous prime is 42659909. The next prime is 42659941. The reversal of 42659929 is 92995624.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19360000 + 23299929 = 4400^2 + 4827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42659929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42659909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640754 + ... + 1640779.

It is an arithmetic number, because the mean of its divisors is an integer number (11485369).

Almost surely, 2^42659929 is an apocalyptic number.

It is an amenable number.

42659929 is a deficient number, since it is larger than the sum of its proper divisors (3281547).

42659929 is a wasteful number, since it uses less digits than its factorization.

42659929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281546.

The product of its digits is 349920, while the sum is 46.

The square root of 42659929 is about 6531.4568818909. The cubic root of 42659929 is about 349.4137915076.

The spelling of 42659929 in words is "forty-two million, six hundred fifty-nine thousand, nine hundred twenty-nine".