42431065 has 8 divisors (see below), whose sum is σ = 53912520. Its totient is φ = 31948032.

The previous prime is 42431063. The next prime is 42431069. The reversal of 42431065 is 56013424.

42431065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7420176 + 35010889 = 2724^2 + 5917^2 .

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

It is not a de Polignac number, because 42431065 - 2¹ = 42431063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42431063) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 249510 + ... + 249679.

It is an arithmetic number, because the mean of its divisors is an integer number (6739065).

Almost surely, 2^42431065 is an apocalyptic number.

It is an amenable number.

42431065 is a deficient number, since it is larger than the sum of its proper divisors (11481455).

42431065 is a wasteful number, since it uses less digits than its factorization.

42431065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499211.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 42431065 is about 6513.9131864034. The cubic root of 42431065 is about 348.7878202241.

Adding to 42431065 its reverse (56013424), we get a palindrome (98444489).

The spelling of 42431065 in words is "forty-two million, four hundred thirty-one thousand, sixty-five".