42571207 has 4 divisors (see below), whose sum is σ = 48652816. Its totient is φ = 36489600.

The previous prime is 42571171. The next prime is 42571211. The reversal of 42571207 is 70217524.

42571207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-42571207 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 (42571307) 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 3 ways as a sum of consecutive naturals, for example, 3040794 + ... + 3040807.

It is an arithmetic number, because the mean of its divisors is an integer number (12163204).

Almost surely, 2^42571207 is an apocalyptic number.

42571207 is a deficient number, since it is larger than the sum of its proper divisors (6081609).

42571207 is an equidigital number, since it uses as much as digits as its factorization.

42571207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6081608.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 42571207 is about 6524.6614471557. The cubic root of 42571207 is about 349.1713922410.

It can be divided in two parts, 42571 and 207, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 42571207 in words is "forty-two million, five hundred seventy-one thousand, two hundred seven".