216142 has 8 divisors (see below), whose sum is σ = 329256. Its totient is φ = 106392.

The previous prime is 216133. The next prime is 216149. The reversal of 216142 is 241612.

216142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216149) by changing a digit.

216142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673 + ... + 940.

It is an arithmetic number, because the mean of its divisors is an integer number (41157).

2²¹⁶¹⁴² is an apocalyptic number.

216142 is a deficient number, since it is larger than the sum of its proper divisors (113114).

216142 is a wasteful number, since it uses less digits than its factorization.

216142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682.

The product of its digits is 96, while the sum is 16.

The square root of 216142 is about 464.9107441219. The cubic root of 216142 is about 60.0131452680.

Adding to 216142 its reverse (241612), we get a palindrome (457754).

The spelling of 216142 in words is "two hundred sixteen thousand, one hundred forty-two".