42016349 has 8 divisors (see below), whose sum is σ = 44206008. Its totient is φ = 39882240.

The previous prime is 42016321. The next prime is 42016363. The reversal of 42016349 is 94361024.

It can be written as a sum of positive squares in 4 ways, for example, as 25 + 42016324 = 5^2 + 6482^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42016349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42016399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12332 + ... + 15365.

It is an arithmetic number, because the mean of its divisors is an integer number (5525751).

Almost surely, 2^42016349 is an apocalyptic number.

It is an amenable number.

42016349 is a deficient number, since it is larger than the sum of its proper divisors (2189659).

42016349 is a wasteful number, since it uses less digits than its factorization.

42016349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27775.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 42016349 is about 6482.0019284169. The cubic root of 42016349 is about 347.6477614627.

The spelling of 42016349 in words is "forty-two million, sixteen thousand, three hundred forty-nine".