42431005 has 8 divisors (see below), whose sum is σ = 51878232. Its totient is φ = 33304128.

The previous prime is 42431003. The next prime is 42431041. The reversal of 42431005 is 50013424.

42431005 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 3767481 + 38663524 = 1941^2 + 6218^2 .

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 42431005 - 2¹ = 42431003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42431003) 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, 79794 + ... + 80323.

It is an arithmetic number, because the mean of its divisors is an integer number (6484779).

Almost surely, 2^42431005 is an apocalyptic number.

It is an amenable number.

42431005 is a deficient number, since it is larger than the sum of its proper divisors (9447227).

42431005 is a wasteful number, since it uses less digits than its factorization.

42431005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160175.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 42431005 is about 6513.9085808752. The cubic root of 42431005 is about 348.7876558219.

Adding to 42431005 its reverse (50013424), we get a palindrome (92444429).

The spelling of 42431005 in words is "forty-two million, four hundred thirty-one thousand, five".