222421142 has 8 divisors (see below), whose sum is σ = 333836856. Its totient is φ = 111142192.

The previous prime is 222421117. The next prime is 222421151. The reversal of 222421142 is 241124222.

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

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, 30023 + ... + 36690.

It is an arithmetic number, because the mean of its divisors is an integer number (41729607).

Almost surely, 2^222421142 is an apocalyptic number.

222421142 is a deficient number, since it is larger than the sum of its proper divisors (111415714).

222421142 is a wasteful number, since it uses less digits than its factorization.

222421142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68382.

The product of its digits is 512, while the sum is 20.

The square root of 222421142 is about 14913.7903297586. The cubic root of 222421142 is about 605.8875409901.

Adding to 222421142 its reverse (241124222), we get a palindrome (463545364).

The spelling of 222421142 in words is "two hundred twenty-two million, four hundred twenty-one thousand, one hundred forty-two".