422400571 has 4 divisors (see below), whose sum is σ = 444632200. Its totient is φ = 400168944.

The previous prime is 422400569. The next prime is 422400577. The reversal of 422400571 is 175004224.

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 422400571 - 2¹ = 422400569 is a prime.

It is a super-2 number, since 2×422400571² = 356844484762252082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422400577) 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, 11115786 + ... + 11115823.

It is an arithmetic number, because the mean of its divisors is an integer number (111158050).

Almost surely, 2^422400571 is an apocalyptic number.

422400571 is a deficient number, since it is larger than the sum of its proper divisors (22231629).

422400571 is a wasteful number, since it uses less digits than its factorization.

422400571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22231628.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 422400571 is about 20552.3860172000. The cubic root of 422400571 is about 750.3113202365.

Adding to 422400571 its reverse (175004224), we get a palindrome (597404795).

The spelling of 422400571 in words is "four hundred twenty-two million, four hundred thousand, five hundred seventy-one".