42738065 has 8 divisors (see below), whose sum is σ = 51402600. Its totient is φ = 34112512.

The previous prime is 42738019. The next prime is 42738077. The reversal of 42738065 is 56083724.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18769 + 42719296 = 137^2 + 6536^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42738065 - 2¹² = 42733969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7274 + ... + 11763.

It is an arithmetic number, because the mean of its divisors is an integer number (6425325).

Almost surely, 2^42738065 is an apocalyptic number.

It is an amenable number.

42738065 is a deficient number, since it is larger than the sum of its proper divisors (8664535).

42738065 is a wasteful number, since it uses less digits than its factorization.

42738065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19491.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 42738065 is about 6537.4356593392. The cubic root of 42738065 is about 349.6269903644.

The spelling of 42738065 in words is "forty-two million, seven hundred thirty-eight thousand, sixty-five".