42272005 has 16 divisors (see below), whose sum is σ = 51963120. Its totient is φ = 33000448.

The previous prime is 42271991. The next prime is 42272011. The reversal of 42272005 is 50027224.

It can be written as a sum of positive squares in 8 ways, for example, as 1094116 + 41177889 = 1046^2 + 6417^2 .

It is a cyclic number.

It is not a de Polignac number, because 42272005 - 2⁵ = 42271973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70989 + ... + 71581.

It is an arithmetic number, because the mean of its divisors is an integer number (3247695).

Almost surely, 2^42272005 is an apocalyptic number.

It is an amenable number.

42272005 is a deficient number, since it is larger than the sum of its proper divisors (9691115).

42272005 is a wasteful number, since it uses less digits than its factorization.

42272005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 42272005 is about 6501.6924719645. The cubic root of 42272005 is about 348.3514445126.

Adding to 42272005 its reverse (50027224), we get a palindrome (92299229).

It can be divided in two parts, 422 and 72005, that added together give a palindrome (72427).

The spelling of 42272005 in words is "forty-two million, two hundred seventy-two thousand, five".