42031065 has 16 divisors (see below), whose sum is σ = 67517568. Its totient is φ = 22327296.

The previous prime is 42031039. The next prime is 42031079. The reversal of 42031065 is 56013024.

It is a happy number.

42031065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42031065 - 2⁸ = 42030809 is a prime.

It is a super-2 number, since 2×42031065² = 3533220850068450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1597 + ... + 9306.

It is an arithmetic number, because the mean of its divisors is an integer number (4219848).

Almost surely, 2^42031065 is an apocalyptic number.

It is an amenable number.

42031065 is a deficient number, since it is larger than the sum of its proper divisors (25486503).

42031065 is a wasteful number, since it uses less digits than its factorization.

42031065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11168.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 42031065 is about 6483.1369721764. The cubic root of 42031065 is about 347.6883439773.

Adding to 42031065 its reverse (56013024), we get a palindrome (98044089).

The spelling of 42031065 in words is "forty-two million, thirty-one thousand, sixty-five".