422404172 has 12 divisors (see below), whose sum is σ = 742085400. Its totient is φ = 210379776.

The previous prime is 422404127. The next prime is 422404183. The reversal of 422404172 is 271404224.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204422 + ... + 206477.

It is an arithmetic number, because the mean of its divisors is an integer number (61840450).

Almost surely, 2^422404172 is an apocalyptic number.

It is an amenable number.

422404172 is a deficient number, since it is larger than the sum of its proper divisors (319681228).

422404172 is a wasteful number, since it uses less digits than its factorization.

422404172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411160 (or 411158 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 422404172 is about 20552.4736224134. The cubic root of 422404172 is about 750.3134523860.

Adding to 422404172 its reverse (271404224), we get a palindrome (693808396).

The spelling of 422404172 in words is "four hundred twenty-two million, four hundred four thousand, one hundred seventy-two".