42571061 has 4 divisors (see below), whose sum is σ = 45845772. Its totient is φ = 39296352.

The previous prime is 42571057. The next prime is 42571093. The reversal of 42571061 is 16017524.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8814961 + 33756100 = 2969^2 + 5810^2 .

It is a cyclic number.

It is not a de Polignac number, because 42571061 - 2² = 42571057 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 42571061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42571051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1637336 + ... + 1637361.

It is an arithmetic number, because the mean of its divisors is an integer number (11461443).

Almost surely, 2^42571061 is an apocalyptic number.

It is an amenable number.

42571061 is a deficient number, since it is larger than the sum of its proper divisors (3274711).

42571061 is a wasteful number, since it uses less digits than its factorization.

42571061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274710.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 42571061 is about 6524.6502588261. The cubic root of 42571061 is about 349.1709930738.

Adding to 42571061 its reverse (16017524), we get a palindrome (58588585).

The spelling of 42571061 in words is "forty-two million, five hundred seventy-one thousand, sixty-one".