42185222 has 4 divisors (see below), whose sum is σ = 63277836. Its totient is φ = 21092610.

The previous prime is 42185219. The next prime is 42185233. The reversal of 42185222 is 22258124.

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

It is a junction number, because it is equal to n+sod(n) for n = 42185191 and 42185200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10546304 + ... + 10546307.

It is an arithmetic number, because the mean of its divisors is an integer number (15819459).

Almost surely, 2^42185222 is an apocalyptic number.

42185222 is a deficient number, since it is larger than the sum of its proper divisors (21092614).

42185222 is a wasteful number, since it uses less digits than its factorization.

42185222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21092613.

The product of its digits is 2560, while the sum is 26.

The square root of 42185222 is about 6495.0151654942. The cubic root of 42185222 is about 348.1128966071.

The spelling of 42185222 in words is "forty-two million, one hundred eighty-five thousand, two hundred twenty-two".