42206271 has 4 divisors (see below), whose sum is σ = 56275032. Its totient is φ = 28137512.

The previous prime is 42206267. The next prime is 42206279. The reversal of 42206271 is 17260224.

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

It is a cyclic number.

It is not a de Polignac number, because 42206271 - 2² = 42206267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42206279) 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, 7034376 + ... + 7034381.

It is an arithmetic number, because the mean of its divisors is an integer number (14068758).

Almost surely, 2^42206271 is an apocalyptic number.

42206271 is a deficient number, since it is larger than the sum of its proper divisors (14068761).

42206271 is a wasteful number, since it uses less digits than its factorization.

42206271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14068760.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 42206271 is about 6496.6353599383. The cubic root of 42206271 is about 348.1707858365.

Adding to 42206271 its reverse (17260224), we get a palindrome (59466495).

The spelling of 42206271 in words is "forty-two million, two hundred six thousand, two hundred seventy-one".