1642222 has 8 divisors (see below), whose sum is σ = 2469096. Its totient is φ = 819192.

The previous prime is 1642211. The next prime is 1642231. The reversal of 1642222 is 2222461.

It is a sphenic number, since it is the product of 3 distinct primes.

1642222 is a modest number, since divided by 2222 gives 164 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1642222.

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, 648 + ... + 1924.

It is an arithmetic number, because the mean of its divisors is an integer number (308637).

2^1642222 is an apocalyptic number.

1642222 is a deficient number, since it is larger than the sum of its proper divisors (826874).

1642222 is a wasteful number, since it uses less digits than its factorization.

1642222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922.

The product of its digits is 384, while the sum is 19.

The square root of 1642222 is about 1281.4920990783. The cubic root of 1642222 is about 117.9806058330.

Adding to 1642222 its reverse (2222461), we get a palindrome (3864683).

The spelling of 1642222 in words is "one million, six hundred forty-two thousand, two hundred twenty-two".