42226172 has 12 divisors (see below), whose sum is σ = 75614616. Its totient is φ = 20622000.

The previous prime is 42226169. The next prime is 42226199. The reversal of 42226172 is 27162224.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 122579 + ... + 122922.

It is an arithmetic number, because the mean of its divisors is an integer number (6301218).

Almost surely, 2^42226172 is an apocalyptic number.

It is an amenable number.

42226172 is a deficient number, since it is larger than the sum of its proper divisors (33388444).

42226172 is a wasteful number, since it uses less digits than its factorization.

42226172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245548 (or 245546 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 42226172 is about 6498.1668184189. The cubic root of 42226172 is about 348.2255001233.

Adding to 42226172 its reverse (27162224), we get a palindrome (69388396).

The spelling of 42226172 in words is "forty-two million, two hundred twenty-six thousand, one hundred seventy-two".