42271205 has 16 divisors (see below), whose sum is σ = 53376624. Its totient is φ = 32094720.

The previous prime is 42271169. The next prime is 42271223. The reversal of 42271205 is 50217224.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 6832996 + 35438209 = 2614^2 + 5953^2 .

It is not a de Polignac number, because 42271205 - 2¹⁰ = 42270181 is a prime.

It is a Duffinian number.

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, 4799 + ... + 10371.

It is an arithmetic number, because the mean of its divisors is an integer number (3336039).

Almost surely, 2^42271205 is an apocalyptic number.

It is an amenable number.

42271205 is a deficient number, since it is larger than the sum of its proper divisors (11105419).

42271205 is a wasteful number, since it uses less digits than its factorization.

42271205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5656.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 42271205 is about 6501.6309492311. The cubic root of 42271205 is about 348.3492469754.

Adding to 42271205 its reverse (50217224), we get a palindrome (92488429).

The spelling of 42271205 in words is "forty-two million, two hundred seventy-one thousand, two hundred five".